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Quantum DLTtape DLT 8000 Product Manual

Manual is about: Quantum DLT 8000: User Guide

Summary of DLTtape DLT 8000

  • Page 1

    Dlt tm 8000 tape system product manual nov. 10, 2003 81-60118-06.

  • Page 2

    Quantum reserves the right to make changes and improvements to its products, without incurring any obligation to incorporate such changes or improvements in units previously sold or shipped. Quantum reserves the right to make changes to this product manual without incurring any obligation to notify ...

  • Page 3

    User manual statements for class a equipment (integratible tape system) this equipment generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits for a class a digital device pursuant to part 15 of fcc rules, which are designed to pro...

  • Page 4

    User manual statements for class a equipment (continued) user manual statements for class b equipment (tabletop version) this equipment has been tested and found to comply with the limits for a class b digital device, pursuant to part 15 of the fcc rules. These limits are designed to provide reasona...

  • Page 5

    User manual statements for class b equipment (continued).

  • Page 7: Table of Contents

    Quantum dlt 8000 tape system v table of contents page revision history ......................................................................................................................................Xxv about this manual.............................................................................

  • Page 8

    Table of contents vi quantum dlt 8000 tape system chapter 2: configuring, installing and operating the tape system 2.1 safety, handling, and electrostatic discharge (esd) protection...................................................2-1 2.1.1 safety precautions...........................................

  • Page 9

    Table of contents quantum dlt 8000 tape system vii chapter 3: scsi description 3.1 scsi overview ......................................................................................................................................3-1 3.2 scsi commands...................................................

  • Page 10

    Table of contents viii quantum dlt 8000 tape system chapter 4: scsi messages 4.1 message format..............................................................................................................................4-1 4.2 supported scsi messages...................................................

  • Page 11

    Table of contents quantum dlt 8000 tape system ix 5.1.7 data cache and tape write interaction ......................................................................... 5-12 5.2 scsi command descriptions in this manual ......................................................................... 5-13 5.3...

  • Page 12

    Table of contents x quantum dlt 8000 tape system 5.9.3 disconnect / reconnect page (02h) ........................................................................ 5-84 5.9.4 control mode page (0ah)........................................................................................... 5-86 5.9.5 d...

  • Page 13

    Table of contents quantum dlt 8000 tape system xi 5.17 read position command (34h).........................................................................................5-173 5.17.1 standard read position data......................................................................................5-1...

  • Page 14

    Table of contents xii quantum dlt 8000 tape system appendix f: timeout specifications for dlt 8000 tape system scsi commands...................F-1 appendix g: dlt 7000 emulation feature..........................................................................................G-1 index ..................

  • Page 15

    Table of contents quantum dlt 8000 tape system xiii figures figure 2–1 location of scsi id connector block..................................................................................2-4 figure 2–2 jumper installed on pin pair 3 / 4 enables termination power (term pwr) ..............2-6 figure ...

  • Page 16

    Table of contents xiv quantum dlt 8000 tape system figure 5–13 load unload command descriptor block — data format...................................... 5-34 figure 5–14 locate command descriptor block — data format................................................... 5-37 figure 5–15 log select comman...

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    Table of contents quantum dlt 8000 tape system xv figure 5–42 disconnect / reconnect page — data format.............................................................. 5-84 figure 5–43 control mode page format descriptor — data format.............................................. 5-86 figure 5–44 data...

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    Table of contents xvi quantum dlt 8000 tape system figure 5–70 prevent / allow medium removal command descriptor block — data format................................................................................................................................5-161 figure 5–71 read command descripto...

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    Table of contents quantum dlt 8000 tape system xvii figure 5–99 space command descriptor block — data format ...................................................5-223 figure 5–100 test unit ready command descriptor block — data format.............................5-225 figure 5–101 verify command desc...

  • Page 20

    Table of contents xviii quantum dlt 8000 tape system tables table 1 − 1 storage capacity .......................................................................................................................1-2 table 1 − 2 performance and timing specifications .........................................

  • Page 21

    Table of contents quantum dlt 8000 tape system xix table 2–11 indicator activity during post............................................................................................ 2-39 table 2–12 possible tape system states following initialization .................................................

  • Page 22

    Table of contents xx quantum dlt 8000 tape system table 5–11 identifier descriptor — field descriptions ....................................................................... 5-27 table 5–12 firmware build information page — field descriptions................................................ 5-28 ta...

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    Table of contents quantum dlt 8000 tape system xxi table 5–36 mode parameter header — field descriptions ............................................................... 5-78 table 5–37 mode parameter block descriptor — field descriptions............................................... 5-80 table 5–38...

  • Page 24

    Table of contents xxii quantum dlt 8000 tape system table 5–64 when do conflicts between existing reservations and new reservations exist? ..5-146 table 5–65 persistent reservation out command — field descriptions..............................5-149 table 5–66 persistent reservation out command’s ser...

  • Page 25

    Table of contents quantum dlt 8000 tape system xxiii table 5–92 send diagnostic command data — field descriptions..........................................5-217 table 5–93 send diagnostic cdb bits selftst, devofl, and unitofl ...........................................5-219 table 5–94 send diagnosti...

  • Page 26

    Table of contents xxiv quantum dlt 8000 tape system.

  • Page 27: Revision History

    Quantum dlt 8000 tape system xxv revision history this revision history provides a concise publications record of this manual. It lists the manual’s revision levels, release dates, and a summary of changes for each release. Manual number - revision level date of release summary of changes 81-60118-0...

  • Page 28

    Revision history quantum dlt 8000 tape system xxvi 81-60118-01 january 15, 1999 (continued) (continued) chapter 2: part number added for lvd connector in figure 2-9. Change to wording of first note on page 2-31 (change from “unless” to “when”). Statement about yellow indicator illuminating only afte...

  • Page 29

    Revision history quantum dlt 8000 tape system xxvii 81-60118-02 may 7, 1999 release as version 02 of the product manual. Cover, legal notice page, table of contents, revision history updated to reflect change to version 02 and new release date. Chapter 1 changed name of ntf test to bhc test (basic h...

  • Page 30

    Revision history quantum dlt 8000 tape system xxviii manual number - revision level date of release summary of changes 81-60118-02 may 7, 1999 (updates for version 02 continued) updated illustrations of tabletop rear panel in figure 2-7, 2-8, and 2-10. Changed name of ntf test to bhc test (section 2...

  • Page 31

    Revision history quantum dlt 8000 tape system xxix manual number - revision level date of release summary of changes 81-60118-03 november 9, 1999 1 st release as preliminary version of rev 03. Chapter 1: dropped bhc from features list on page 1-1. Restated compressed transfer rate as “up to 12 mb/se...

  • Page 32

    Revision history quantum dlt 8000 tape system xxx manual number - revision level date of release summary of changes 81-60118-03 november 9, 1999 (continued) incorporated information in appendix b into request sense section of chapter 5; deleted appendix b and re- numbered appendices c – f as b – e. ...

  • Page 33: About This Manual

    Quantum dlt 8000 tape system xxix about this manual “about this manual” outlines the scope and contents of this manual. It contains information about the intended audience, purpose of the manual, document organization, and document conventions. Audience this manual is written for original equipment ...

  • Page 34

    About this manual quantum dlt 8000 tape system xxx chapter 3 scsi description this chapter provides a detailed description of the logical interfaces of the tape system. It describes the product’s compliance with the ansi scsi-2 specification. The system’s many optional features are described here an...

  • Page 35: Conventions

    About this manual quantum dlt 8000 tape system xxxi appendix f timeout specifications for dlt 8000 system scsi controls appendix f provides the timeout specifications for the scsi commands supported by the dlt 8000 tape system. Appendix g dlt 7000 emulation feature appendix g explains how to use the...

  • Page 36

    About this manual quantum dlt 8000 tape system xxxii.

  • Page 37: Chapter 1

    Quantum dlt 8000 tape system 1-1 chapter 1 general description and specifications this chapter provides a description and gives specifications for the quantum dlt™ 8000 tape system. 1.1 general description the quantum dlt 8000 tape system is a high-performance, high-capacity, streaming cartridge tap...

  • Page 38: 1.3   Specifications

    General description and specifications 1-2 quantum dlt 8000 tape system 1.3 specifications this section of provides the performance, physical, environmental, and electrical specifications for the tape system. Specifications for the dlttape tape media cartridges are included. 1.3.1 drive capacity tab...

  • Page 39

    General description and specifications quantum dlt 8000 tape system 1-3 1.3.3 performance and timing specifications table 1 − 2 provides performance and timing specifications for the tape system. Table 1 −2 performance and timing specifications item specification transfer rates user native = 6.0 mb/...

  • Page 40

    General description and specifications 1-4 quantum dlt 8000 tape system table 1 −2 performance and timing specifications (continued) item specification read/write tape speed 168 inches/second linear search tape speed 175 inches/second rewind tape speed 175 inches/second average rewind time 60 second...

  • Page 41

    General description and specifications quantum dlt 8000 tape system 1-5 1.3.4 reliability (projected) mean time between failures (mtbf) for the tape system is projected to be 250,000 hours at 100% duty cycle, not including heads; 300,000 hours at 20% duty cycle, not including heads. Life of recordin...

  • Page 42

    General description and specifications 1-6 quantum dlt 8000 tape system 1.3.6 temperature and humidity table 1 − 4 provides the temperature and humidity specifications for the tape system. Table 1 −4 temperature and humidity specifications description integratible version tabletop version operating ...

  • Page 43

    General description and specifications quantum dlt 8000 tape system 1-7 1.3.7 operating air velocity both versions of the tape system require an air flow velocity of 125 linear feet per minute measured directly in front of the bezel. 1.3.8 vibration, shock, and drop specifications table 1 − 5 provid...

  • Page 44

    General description and specifications 1-8 quantum dlt 8000 tape system table 1 −5 vibration and shock specifications (continued) non-operating (unpackaged) vibration specifications vibration type: sine sweep frequency range 5 – 500 – 5 hz upward and downward sweep acceleration level 1 g 5 – 500 – 5...

  • Page 45

    General description and specifications quantum dlt 8000 tape system 1-9 table 1 −6 drop specifications non-operating (packaged) drop specifications test type: drop shock drop height: 30 inches for items 23 inches for items between 21lbs (9.52 kg) and 40.9 lbs. (18.55 kg) application 10 drops total; ...

  • Page 46

    General description and specifications 1-10 quantum dlt 8000 tape system 1.3.10 acoustic emissions the following tables provide the tape system’s acoustic noise emission levels, both as noise power and sound pressure. Information about acoustic emissions is also provided in german to fulfill an inte...

  • Page 47

    General description and specifications quantum dlt 8000 tape system 1-11 1.3.12 power requirements table 1 − 10 provides the applicable power requirements for both versions of the tape system. Note that the tabletop version requires ac power. Table 1 −10 power requirements description integratible v...

  • Page 48

    General description and specifications 1-12 quantum dlt 8000 tape system 1.3.13 current requirements table 1-11 presents the current requirements for the tape system in a variety of operating conditions. These numbers may vary with workload. Table 1 −11 current requirements drive operating in write ...

  • Page 49

    General description and specifications quantum dlt 8000 tape system 1-13 1.3.14 tape system recording type the tape system uses 2,7 rll code with dlt tm 2000, dlt tm 2000xt, dlt tm 4000, dlt tm 7000, or dlt 8000 format. 1.3.15 dlttape recording media specifications table 1 − 12 provides specificatio...

  • Page 50

    General description and specifications 1-14 quantum dlt 8000 tape system table 1 −12 dlttape media specifications (continued) dlttape media type specifications dlttape iv width: 0.5 inch length: 1800 feet cartridge dimensions: 4.1 in x 4.1 in x 1.0 in shelf life: 30 years min. @ 20 ° c & 40% rh (non...

  • Page 51

    General description and specifications quantum dlt 8000 tape system 1-15 1.3.16 electromagnetic interference (emi) susceptibility this section presents tables that provide the specifications for conducted emissions, radiated emissions, magnetic radiated susceptibility, radiated susceptibility, condu...

  • Page 52

    General description and specifications 1-16 quantum dlt 8000 tape system table 1 −15 radiated emissions note table 1-15 shows the class b equipment limits for radiated interference field strength in the frequency range from 30 mhz to 30 ghz at a test distance of 3 and 10 meters. Frequency range (mhz...

  • Page 53

    General description and specifications quantum dlt 8000 tape system 1-17 table 1 −18 conducted susceptibility note the transient voltage is the actual peak voltage above the normal ac voltage from the power source. Fast transient (bursts) for power and data cables 2 kv s/w recoverable errors no hard...

  • Page 54

    General description and specifications 1-18 quantum dlt 8000 tape system.

  • Page 55: Chapter 2

    Quantum dlt 8000 tape system 2-1 chapter 2 configuring, installing, and operating the tape system this chapter contains information needed for the integration of the tape system into a system or subsystem. This includes safety and handling instructions, configuration jumper settings, connector pin a...

  • Page 56

    Configuring, installing, and operating the tape system 2-2 quantum dlt 8000 tape system • always handle the system carefully and gently. A drop of 1/4 inch onto a bench or desktop may damage a system. • do not bump, jar, or drop the system. Use care when transporting the system. • never place the ta...

  • Page 57: 2.2

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-3 2.2 configuring and installing an integral tape system this section provides information for configuring and installing a tape system that is integrated into a host system, expansion cabinet, or other chassis. For...

  • Page 58

    Configuring, installing, and operating the tape system 2-4 quantum dlt 8000 tape system 2.2.1 setting the scsi id select the appropriate scsi id (ids 0 through 15 are available) for the tape system by installing jumper blocks on the pin pairs of the connector block located on the tape system’s pcba ...

  • Page 59

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-5 table 2–1 scsi id jumper settings notes the default setting (no jumpers installed) for the tape system is scsi id 5. A jumper must always be placed on pin pair 9 / 10 (scsi id present) for the host to recognize an...

  • Page 60

    Configuring, installing, and operating the tape system 2-6 quantum dlt 8000 tape system 2.2.2 setting term pwr a scsi bus must be terminated at each end of the bus. At least one device on the bus must supply terminator power (term pwr). To configure the dlt 8000 tape drive to supply term pwr, instal...

  • Page 61

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-7 2.2.3 setting parity checking parity checking is the default setting for dlt 8000 tape systems. If the system to which you are configuring the tape system does not generate parity, disable parity checking on the t...

  • Page 62

    Configuring, installing, and operating the tape system 2-8 quantum dlt 8000 tape system 2.2.4 installing the tape system installing the tape system requires securing the tape system in its bay or chassis and connecting scsi bus and power cables. 2.2.4.1 securing the tape system in bay or chassis usi...

  • Page 63

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-9 figure 2–4 locations and dimensions for mounting holes.

  • Page 64

    Configuring, installing, and operating the tape system 2-10 quantum dlt 8000 tape system 2.2.4.2 connecting scsi bus and power cables carefully connect the appropriate scsi and power cables to their matching connectors. Figure 2-5 shows the location of the scsi and power connectors on the rear of th...

  • Page 65

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-11 table 2–2 68-pin single-ended configuration scsi connector signal names signal name pin number pin number signal name signal return 1 35 -db(12) signal return 2 36 -db(13) signal return 3 37 -db(14) signal return...

  • Page 66

    Configuring, installing, and operating the tape system 2-12 quantum dlt 8000 tape system table 2–3 68-pin wide lvd version scsi connector signal names signal name pin number pin number signal name +db(12) 1 35 -db(12) +db(13) 2 36 -db(13) +db(14) 3 37 -db(14) +db(15) 4 38 -db(15) +db(p1) 5 39 -db(p1...

  • Page 67

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-13 table 2–4 68-pin differential version scsi connector signal names signal name pin number pin number signal name +db(12) 1 35 -db(12) +db(13) 2 36 -db(13) +db(14) 3 37 -db(14) +db(15) 4 38 -db(15) +db(p1) 5 39 -db...

  • Page 68

    Configuring, installing, and operating the tape system 2-14 quantum dlt 8000 tape system table 2–5 power connector signal names pin signal 1 +12 vdc 2 ground (+12 v return) 3 ground (+5 v return) 4 +5 vdc 2.2.4.3 the loader connector located on the side of the integratible tape system (figure 2-6), ...

  • Page 69: 2.3

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-15 2.3 configuring and installing a tabletop tape system this section provides instructions for configuring and installing the tabletop version of the tape system. The tabletop version is enclosed in a top cover and...

  • Page 70

    Configuring, installing, and operating the tape system 2-16 quantum dlt 8000 tape system figure 2–7 physical dimensions of dlt 8000 tabletop system.

  • Page 71

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-17 2.3.1 selecting scsi id select the appropriate scsi id for the tabletop version of the tape system by incrementing or decrementing the number displayed on the scsi id selection switch on the tabletop tape system’...

  • Page 72

    Configuring, installing, and operating the tape system 2-18 quantum dlt 8000 tape system 2.3.2 connecting the scsi bus cables figure 2-9 shows the locations of the two scsi bus connectors on the rear panel of the tabletop tape system. The scsi bus cable leading from the host adapter can be connected...

  • Page 73

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-19 2.3.3 installing the ac power cord warning do not attempt to modify or use an external 100 - 115 vac power cord for 220 - 240 vac input power. Modifying the power cord in any way can cause personal injury and sev...

  • Page 74: 115 V

    Configuring, installing, and operating the tape system 2-20 quantum dlt 8000 tape system 115 v 220 / 240 v figure 2–10 ac power cord plug ends.

  • Page 75

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-21 figure 2-11 shows the location of the ac power cord connector on the tabletop tape system’s rear panel. Figure 2–11 location of ac power cord connector on rear panel (tabletop version) ac power cord connector.

  • Page 76: 2.4  The Tape Cartridge

    Configuring, installing, and operating the tape system 2-22 quantum dlt 8000 tape system 2.4 the tape cartridge the tape system can use one of the following types of dlttape cartridge: type plastic color feet/cartridge dlttape iii grayish brown 1200 dlttape iiixt white 1800 dlttape iv black 1800 thi...

  • Page 77

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-23 2.4.1 care and handling of tape cartridges although designed and manufactured to withstand much handling and use, tape cartridges should be handled properly. • do not carry cartridges loosely in a box or other co...

  • Page 78

    Configuring, installing, and operating the tape system 2-24 quantum dlt 8000 tape system • the ambient operating environment for the tape cartridge is temperature 10 ° c to 40 ° c (50 ° f to 104 ° f) relative humidity 20% to 80% (non-condensing) if storage and/or transportation of a tape cartridge h...

  • Page 79

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-25 2.4.2 tape cartridge write-protect switch figure 2-12 write-protect switch on tape cartridge each tape cartridge has a write-protect switch that can be used to prevent accidental erasure of data. Before inserting...

  • Page 80

    Configuring, installing, and operating the tape system 2-26 quantum dlt 8000 tape system when a tape cartridge is loaded in the system and the tape cartridge’s write-protect switch is moved to its write-protected position (to the left as you face the label/switch side of the tape cartridge), the sys...

  • Page 81

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-27 2.4.3 checking a tape cartridge before you insert any tape cartridge, you should inspect it to ensure that it is not damaged. Refer to appendix e for a detailed visual mechanical inspection procedure and other dl...

  • Page 82: Dlt

    Configuring, installing, and operating the tape system 2-28 quantum dlt 8000 tape system 2.4.4 loading a cartridge note because this section of the manual includes descriptions of the states of indicators on the tape system, it may be useful to review sections of this chapter that describe tape syst...

  • Page 83

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-29 1. When the green operate handle indicator is steadily illuminated, lift the tape system’s cartridge insert/release handle. Note if the green operate handle indicator is blinking, close the handle and wait for th...

  • Page 84

    Configuring, installing, and operating the tape system 2-30 quantum dlt 8000 tape system 2.4.5 unloading a cartridge note because this section of the manual includes descriptions of the states of indicators on the tape system, it may be useful to review sections of this chapter that describe tape sy...

  • Page 85

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-31 3. Remove the cartridge. 4. Push the insert/release handle to its closed position. 2.4.6 how and when to use a cleaning tape cartridge note because this section of the manual includes descriptions of the states o...

  • Page 86

    Configuring, installing, and operating the tape system 2-32 quantum dlt 8000 tape system table 2–9 when to use a cleaning cartridge (continued) if it means and you should…. The use cleaning tape indicator continues to be illuminated steadily after you have used a cleaning cartridge to clean the reco...

  • Page 87

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-33 2.5 operating the tape system – controls and indicators operating the tape system requires use of a tape cartridge and the controls and indicators on the front panel, or bezel, of the tape system. All controls an...

  • Page 88

    Configuring, installing, and operating the tape system 2-34 quantum dlt 8000 tape system 2.5.1 unload button use the unload button to unload the tape cartridge. When a user pushes the unload button, the tape system waits until any active writing of data to tape is completed, then begins its unload s...

  • Page 89

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-35 2.5.3 selecting density caution if the tape is not positioned at end of data (eod), a write to the tape will deny access to previously recorded data beyond the current tape position. To prevent this, position the...

  • Page 90

    Configuring, installing, and operating the tape system 2-36 quantum dlt 8000 tape system to select density on the tape system, load the tape cartridge into the tape system. The yellow tape in use indicator blinks while the tape loads and calibrates. After calibration is complete, the tape in use ind...

  • Page 91

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-37 table 2–10 indicator light activity during density selection if… then… the density select button is not used the illuminated indicators show data density when the tape is being read from and written to. The indic...

  • Page 92

    Configuring, installing, and operating the tape system 2-38 quantum dlt 8000 tape system 2.6 power on self test (post) and indicator activity during post when power is applied to the tape system, it performs power-on self testing (post). The sequence of events that may be observed is: table 2–11 ind...

  • Page 93

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-39 table 2–12 possible tape system states following initialization (continued) state indicator display and activity a tape cartridge is present, but the handle is up (not recommended) the yellow tape in use indicato...

  • Page 94

    Configuring, installing, and operating the tape system 2-40 quantum dlt 8000 tape system 2.7 tape system operating modes and indicator activity table 2-13 describes the various operating conditions of a tape system and what observations can be made of the various indicators for each mode. A detailed...

  • Page 95

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-41 illuminate steadily.

  • Page 96

    Configuring, installing, and operating the tape system 2-42 quantum dlt 8000 tape system table 2–13 tape system operating modes / indicator activity (continued) front panel indicator color of indicator state operating mode all four right-hand or all six left-hand indicators --- on blinking post is b...

  • Page 97

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-43 (automatic) tape in use indicator and modes whenever the yellow tape in use indicator is illuminated steadily, the tape system and cartridge are ready to use. When the system is calibrating, reading, writing, or ...

  • Page 98: Feature

    Configuring, installing, and operating the tape system 2-44 quantum dlt 8000 tape system 2.8 using the dlt 8000 tape system’s basic health check (bhc) test feature note the bhc feature is provided for use only by a trained service provider. The bhc test uses the tape system’s firmware to check the v...

  • Page 99: 2.9  Troubleshooting

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-45 2.9 troubleshooting use table 2-15 for troubleshooting tips in the event that your tape system fails its power-on self test or if it signals a problem via its front panel indicators. Table 2–15 troubleshooting ch...

  • Page 100

    Configuring, installing, and operating the tape system 2-46 quantum dlt 8000 tape system table 2–15 troubleshooting chart (continued) if… then… you should… system does not recognize the tape system (continued) 1. Scsi bus may be too long. 2. Too many devices on the bus. 1. Limit bus length to ansi s...

  • Page 101

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-47 table 2–15 troubleshooting chart (continued) if… then… you should… indicators along right-hand side of front panel are blinking and the operate handle light is illuminated steadily the tape leader may be dropped....

  • Page 103: Chapter 3

    Quantum dlt 8000 tape system 3-1 chapter 3 scsi description this chapter provides a detailed description of the logical interfaces of the tape drive. The drive is fully compliant with the ansi scsi-2 standard for tape drive devices and implements many optional features 3.1 scsi overview the small co...

  • Page 104: 3.2

    Scsi description 3-2 quantum dlt 8000 tape system 3.2 scsi commands ansi classifies scsi commands as mandatory, optional, or vendor-specific. The mandatory and optional commands implemented for the drives are summarized in table 3–1 and described fully in chapter 5, scsi commands. Table 3–1 implemen...

  • Page 105

    Scsi description quantum dlt 8000 tape system 3-3 table 3–1 implemented ansi scsi-2 command (continued) command code class description mode select (6) 15h optional provides a means for the initiator to specify device parameters. Mode sense (6)/(10) 1ah/ 5ah optional provides a means for a drive to r...

  • Page 106

    Scsi description 3-4 quantum dlt 8000 tape system table 3–1 implemented ansi scsi-2 command (continued) command code class description test unit ready 00h mandatory provides a means to check if the logical unit is ready. Verify 2fh optional requests the drive to verify the data written to the medium...

  • Page 107: 3.3

    Scsi description quantum dlt 8000 tape system 3-5 3.3 signal states the following paragraphs describe signal values and scsi id bits. 3.3.1 signal values all signal values are actively driven true (low voltage). Because the signal drivers are or-tied, the bus terminator’s bias circuitry pulls false ...

  • Page 108

    Scsi description 3-6 quantum dlt 8000 tape system connector. Chapter 2, configuring, installing, and operating the tape system has full instructions for setting the scsi id..

  • Page 109: 3.4

    Scsi description quantum dlt 8000 tape system 3-7 3.4 scsi signals the following paragraphs define scsi signals and bus timing values. 3.4.1 scsi signal definitions table 3–3 defines the scsi bus signals. Table 3–3 scsi-2 bus signal definitions signal definition ack (acknowledge) a signal driven by ...

  • Page 110

    Scsi description 3-8 quantum dlt 8000 tape system table 3–3 scsi-2 bus signal definitions (continued) signal definition rst (reset) an or-tied signal that initiates a reset condition. Sel (select) an or-tied signal used by an initiator to select a target or by a target to reselect an initiator. 3.4....

  • Page 111

    Scsi description quantum dlt 8000 tape system 3-9 table 3–4 scsi bus timing values (continued) timing description value description bus settle delay 400 ns minimum time to wait for the bus to settle after changing certain control signals as called out in the protocol definitions. Cable skew delay 10...

  • Page 112

    Scsi description 3-10 quantum dlt 8000 tape system table 3–4 scsi bus timing values (continued) timing description value description transfer period2 minimum time allowed between the leading edges of successive req pulses and of successive ack pulses while using standard or fast synchronous data tra...

  • Page 113: 3.5

    Scsi description quantum dlt 8000 tape system 3-11 3.5 scsi bus phases the scsi architecture includes eight distinct phases: bus free phase arbitration phase selection phase reselection phase command phase data phases (in/out) status phase message phases (in/out) the last four phases are called the ...

  • Page 114

    Scsi description 3-12 quantum dlt 8000 tape system caution any occurrence of a bus parity error (i.E., a single-bit error) should be considered serious: it implies the possibility of undetected double-bit error may exist on the bus. This may cause undetected data corruption. On properly configured s...

  • Page 115

    Scsi description quantum dlt 8000 tape system 3-13 if a scsi device requires more than one bus settle delay to detect the bus free phase, then it releases all scsi bus signals within one bus clear delay minus the excess time to detect the bus free phase. The total time to clear the scsi bus cannot e...

  • Page 116

    Scsi description 3-14 quantum dlt 8000 tape system if no higher priority scsi id bit is true on the data bus, the scsi device wins the arbitration and asserts the sel signal. • the winning scsi device waits at least one bus clear delay plus one bus settle delay after asserting the sel signal before ...

  • Page 117

    Scsi description quantum dlt 8000 tape system 3-15 note that the initiator will release the sel signal and may change the data bus no less than two deskew delays after it detects that the bsy signal is true. The drive waits until the sel signal is false before asserting the req signal to enter an in...

  • Page 118

    Scsi description 3-16 quantum dlt 8000 tape system 4. Sets the data bus to the logical or of its scsi id bit and the initiator’s scsi id bit..

  • Page 119

    Scsi description quantum dlt 8000 tape system 3-17 5. Waits at least two deskew delays. 6. Releases the bsy signal. 7. Waits at least one bus settle delay before looking for a response from the initiator. The initiator: 8. Determines that it is selected when the following occur for at least one bus ...

  • Page 120

    Scsi description 3-18 quantum dlt 8000 tape system reselection time-out two optional time-out procedures are specified for clearing the scsi bus if the initiator waits a minimum of a selection time-out delay and there has been no bsy signal response from the drive. 1. The initiator asserts the rst s...

  • Page 121

    Scsi description quantum dlt 8000 tape system 3-19 notes (continued) 7. The tape drive does not act as an initiator on the scsi bus. Therefore, the drive does not 1) generate unsolicited interrupts to the bus, 2) initiate its own scsi commands, and 3) assert bus reset. 8. A mini-library subsystem is...

  • Page 122

    Scsi description 3-20 quantum dlt 8000 tape system information transfer direction true i/o signal: from drive to initiator false i/o signal: from initiator to drive table 3–5 information transfer phases msg signal c/d i/o phase name direction of transfer/ definition 0 0 0 data out initiator to drive...

  • Page 123

    Scsi description quantum dlt 8000 tape system 3-21 3.5.5.1 asynchronous data transfer drive to initiator transfer procedure 1. The drive drives the db (0-15, p, & p1) signals to their desired values. 2. Drive delays at least one deskew delay plus a cable skew delay. 3. Drive asserts the req signal. ...

  • Page 124

    Scsi description 3-22 quantum dlt 8000 tape system 3.5.5.2 synchronous data transfer synchronous data transfer is optional and is only used in data phases and only if a synchronous data transfer agreement is established. The req/ack offset specifies the maximum number of req pulses that can be sent ...

  • Page 125

    Scsi description quantum dlt 8000 tape system 3-23 initiator-to-drive transfer procedure initiator transfers one byte for each req pulse received. 1. Drive asserts the req signal. 2. After receiving the leading edge of the req signal, initiator drives the db (0-15, p, & p1) signals to their desired ...

  • Page 126

    Scsi description 3-24 quantum dlt 8000 tape system • when switching the data bus from in to out, the drive releases the data bus no later than a deskew delay after negating the i/o signal. • the atn and rst signals can change as defined under the descriptions for the attention condition (section 3.6...

  • Page 127

    Scsi description quantum dlt 8000 tape system 3-25 note in contrast to the busy status condition, the drive not ready sense key is returned as part of the sense data following a request sense command and indicates that a media access command has been issued but that the media is not ready to be acce...

  • Page 128: 3.6

    Scsi description 3-26 quantum dlt 8000 tape system 3.6 scsi bus conditions the scsi bus has two asynchronous conditions: attention and reset. 3.6.1 attention condition the attention condition informs a drive that an initiator has a message ready. The drive gets the message by performing a message ou...

  • Page 129

    Scsi description quantum dlt 8000 tape system 3-27 table 3–6 drive message out phase response atn signal true in phase... The drive enters message out… command after transferring part or all of the command descriptor block bytes. Data at the drive’s earliest convenience (often on a logical block bou...

  • Page 130

    Scsi description 3-28 quantum dlt 8000 tape system • the tape medium is rewound to beginning of partition (bop, i.E., beginning of tape [bot]). Note that the tape drive does not implement the hard reset alternative for bus reset processing. The tape drive recognizes multiple bus resets in succession...

  • Page 131: Chapter 4

    Quantum dlt 8000 tape system 4-1 chapter 4 messages the scsi message system allows communication between an initiator and the drive for interface management and command qualification. Messages can be originated by either the initiator or the drive. This section contains a detailed description of the...

  • Page 132

    Messages 4-2 quantum dlt 8000 tape system the dlt 8000 tape drive supports the messages listed in table 4–2. The message code and the direction of the message flow is also included in the table (in = target to initiator, out = initiator to target)..

  • Page 133

    Messages quantum dlt 8000 tape system 4-3 table 4–2 supported messages message message code direction abort 06h out bus device reset 0ch out command complete 00h in disconnect 04h in out extended message (sdtr and wide data transfer request) * 01h in out identify 80h – ffh in out ignore wide residue...

  • Page 134

    Messages 4-4 quantum dlt 8000 tape system bit byte 7 6 5 4 3 2 1 0 0 extended message (01h) 1 extended message length 2 extended message code 3 to n - 1 extended message arguments figure 4–1 extended message — data format table 4–3 extended message — field description field description extended mess...

  • Page 135: 4.2

    Messages quantum dlt 8000 tape system 4-5 4.2 supported scsi messages following are descriptions of each of the messages supported by the drive. 4.2.1 abort message (06h) this message is sent from the initiator to the target to clear the current i/o process on the selected unit. Buffered (cached) wr...

  • Page 136

    Messages 4-6 quantum dlt 8000 tape system 4.2.4 disconnect message (04h) the disconnect message is sent from the drive to inform the initiator that the present connection is going to be broken (the drive plans to disconnect by releasing the bsy signal) and a later reconnect will be required to compl...

  • Page 137

    Messages quantum dlt 8000 tape system 4-7 4.2.5 identify message (80h - ffh) the identify message is sent by either the initiator or the drive to establish or re- establish the physical connection path between an initiator and target for a particular logical unit, under the conditions listed below. ...

  • Page 138

    Messages 4-8 quantum dlt 8000 tape system 4.2.6 ignore wide residue message (23h) the ignore wide residue message is sent by the target to the initiator to indicate that the number of valid bytes sent during the last req/ack handshake and reqb/ackb handshake of a data in phase is less than the negot...

  • Page 139

    Messages quantum dlt 8000 tape system 4-9 4.2.7 initiator detected error message (05h) the initiator detected error message is sent from an initiator to inform the drive that an error has occurred that does not preclude the drive from retrying the operation (a bus parity error, for example). The sou...

  • Page 140

    Messages 4-10 quantum dlt 8000 tape system 4.2.8 linked command complete message (0ah) this message is sent from a target to an initiator to indicate that the execution of a linked command (with the flag bit set to zero) is complete and that status has been sent. The initiator then sets the pointers...

  • Page 141

    Messages quantum dlt 8000 tape system 4-11 4.2.12 no operation (08h) if a target requests a message, the initiator sends a no operation message if it does not currently have any other valid message to send. The message is accepted when the drive is acting as a target and may be sent when it is an in...

  • Page 142

    Messages 4-12 quantum dlt 8000 tape system 4.2.15 synchronous data transfer request message (01h) note the tape drive supports initiating synchronous transfer negotiations with the host, but this feature is disabled by default. To enable it, set the mode select vu errom parameter enainitsyncneg. Thi...

  • Page 143

    Messages quantum dlt 8000 tape system 4-13 4.2.16 wide data transfer request message (03h) the following figure illustrates the message formats. Bit byte 7 6 5 4 3 2 1 0 0 extended message identifier (01h) (see figure 4-1) 1 extended message length (02h) 2 wide data transfer request (03h) 3 transfer...

  • Page 144

    Messages 4-14 quantum dlt 8000 tape system the dlt 8000 tape drive implements both wide data transfer option and synchronous data transfer option. It negotiates the wide data transfer agreement prior to negotiating the synchronous data transfer agreement. If a synchronous data transfer agreement is ...

  • Page 145: Chapter 5

    Quantum dlt 8000 tape system 5-1 chapter 5 scsi commands this chapter describes the scsi protocol features implemented in the dlt 8000 tape system. Note that the sections included in this chapter do not fully reiterate every ansi scsi message, option, and/or command code specification; the sections ...

  • Page 146

    Scsi commands 5-2 quantum dlt 8000 tape system table 5–1 supported scsi commands (continued) command operation code subsection report luns a0h 5.22 request sense 03h 5.23 reserve unit (6) 16h 5.24 reserve unit (10) 56h 5.25 rewind 01h 5.26 send diagnostic 1dh 5.27 space 11h 5.28 test unit ready 00h ...

  • Page 147

    Scsi commands quantum dlt 8000 tape system 5-3 5.1.1 scsi pointers scsi architecture provides a set of three pointers (called saved pointers) for each i/o process. The three pointers are command, status, and data. When an i/o process becomes active, the three saved pointers are copied to the initiat...

  • Page 148

    Scsi commands 5-4 quantum dlt 8000 tape system 5.1.2 command descriptor block an initiator communicates with the drive by sending a 6- or 10-byte command descriptor block that contains the parameters for the specific command. The scsi command's operation code is always the first byte in the command ...

  • Page 149

    Scsi commands quantum dlt 8000 tape system 5-5 table 5–2 command descriptor block — field descriptions field description operation code the operation code specifies the command being requested. The list of supported scsi commands and their operation codes are contained in table 5–1. Logical unit num...

  • Page 150

    Scsi commands 5-6 quantum dlt 8000 tape system table 5–2 command descriptor block — field descriptions (continued) field description control field the control field is the last byte of every command descriptor block. Its format is shown in figure 5–2 and it contains the flag and link bits. Use of th...

  • Page 151

    Scsi commands quantum dlt 8000 tape system 5-7 5.1.3 status/error reporting scsi message-level errors are communicated by messages that are defined specifically for that purpose (for example, message parity error, message reject). Message- level errors are also handled by drive-managed retries. Refe...

  • Page 152

    Scsi commands 5-8 quantum dlt 8000 tape system note in contrast to the busy status condition, the drive not ready sense key is returned as part of the sense data following a request sense command and indicates that a media access command has been issued and the medium is not ready to be accessed. Fo...

  • Page 153

    Scsi commands quantum dlt 8000 tape system 5-9 table 5–5 data-phase command contents command length in cdb data out (to drive) data in (to initiator) erase 0 inquiry allocation --- standard inquiry or a vital product data page load unload 0 --- --- locate 0 --- --- log select parameter list (must be...

  • Page 154

    Scsi commands 5-10 quantum dlt 8000 tape system table 5–5 data-phase command contents (continued) command length in cdb data out (to drive) data in (to initiator) report luns allocation --- supported luns list request sense allocation --- sense data (18) reserve unit 0 (extent list option not suppor...

  • Page 155

    Scsi commands quantum dlt 8000 tape system 5-11 5.1.6 behavior at power-on and scsi bus reset the following apply to the dlt 8000 tape drive’s behavior at power-on and/or scsi bus reset: • when the quantum dlt 8000 system is powered up, all device scsi lines are set to high impedance. • the design o...

  • Page 156

    Scsi commands 5-12 quantum dlt 8000 tape system 5.1.7 data cache and tape write interaction the quantum dlt 8000 system tape drive contains a data cache that buffers blocks (records) until they are written to tape. This section describes when those blocks are written, or “flushed” to tape. A mode se...

  • Page 157: 5.2.

    Scsi commands quantum dlt 8000 tape system 5-13 5.2. Scsi command descriptions in this manual the scsi commands are presented in alphabetical order. Each command starts on a new, odd-numbered page. Because information about a particular command may span multiple pages, the command name is repeated, ...

  • Page 158

    Scsi commands 5-14 quantum dlt 8000 tape system throughout this manual, multiple bytes that contain information about specific command parameters are portrayed as shown in the example of the parameter list length field (bytes 7 and 8) of the log select command shown below: bit byte 7 6 5 4 3 2 1 0 (...

  • Page 159: 5.3

    Scsi commands quantum dlt 8000 tape system 5-15 5.3 erase command (19h) the erase command causes data on the tape medium to be erased. Note erase command must be issued while at bot. Bit byte 7 6 5 4 3 2 1 0 0 operation code (19h) 1 logical unit number reserved immed long (1) 2 reserved 3 reserved 4...

  • Page 160

    Scsi commands 5-16 quantum dlt 8000 tape system erase command (19h) (continued) table 5–6 erase command descriptor block — field descriptions field description immed immediate. If the immediate bit = 0, the target does not return status until the selected operation has completed. If set to 1, status...

  • Page 161: 5.4

    Scsi commands quantum dlt 8000 tape system 5-17 5.4 inquiry command (12h) the inquiry command allows the initiator to determine the kind of scsi devices attached to its scsi bus. It causes a device that is attached to a scsi bus to return information about itself. The drive identifies itself as a di...

  • Page 162

    Scsi commands 5-18 quantum dlt 8000 tape system inquiry command (12h) (continued) table 5–7 inquiry command descriptor block — field descriptions field description cmddt command support data. If cmddt = 0 and evpd (see below) = 0, the drive returns the standard inquiry data. If cmddt = 1 with evpd =...

  • Page 163

    Scsi commands quantum dlt 8000 tape system 5-19 inquiry command (12h) (continued) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 rmb device type modifier 2 iso version ecma version ansi version 3 aenc trmiop reserved response data format 4 additional length = 33h 5 reserved...

  • Page 164

    Scsi commands 5-20 quantum dlt 8000 tape system inquiry command (12h) (continued) table 5–8 contains field descriptions for the data returned by the drive. Table 5–8 standard inquiry data page — field descriptions field name value description peripheral qualifier 0 non-zero if initiator selects an i...

  • Page 165

    Scsi commands quantum dlt 8000 tape system 5-21 inquiry command (12h) (continued) table 5–8 standard inquiry data page — field descriptions (continued) field name value description product revision level this field contains 4 bytes of ascii data that provides the drive’s firmware revision levels. Th...

  • Page 166

    Scsi commands 5-22 quantum dlt 8000 tape system inquiry command (12h) (continued) 5.4.2 vendor unique inquiry data the following information can be used to precisely identify the revision of subsystem components. Bit byte 7 6 5 4 3 2 1 0 36 product family (8) released firmware 37 firmware major vers...

  • Page 167

    Scsi commands quantum dlt 8000 tape system 5-23 inquiry command (12h) (continued) table 5–9 vendor unique inquiry data page — field descriptions field name description product family this field indicates the data density of each of the dlt tape drives as follows: product family bit drive density 0 n...

  • Page 168

    Scsi commands 5-24 quantum dlt 8000 tape system 5.4.3 supported vital product data pages and command support data the supported vital product data pages page (figure 5–7) provides a directory of the vital product data pages that are supported by the drive. The supported pages are: • the unit serial ...

  • Page 169

    Scsi commands quantum dlt 8000 tape system 5-25 inquiry command (12h) (continued) the unit serial number page (80h) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 page code (80h) 2 reserved 3 page length (0ah) 4 - 13 serial number figure 5–8 unit serial number page — data f...

  • Page 170

    Scsi commands 5-26 quantum dlt 8000 tape system inquiry command (12h) (continued) the device identification page (83h) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 page code (83h) 2 reserved 3 page length (n-3) 4 - n identification descriptors figure 5–9 device identifica...

  • Page 171

    Scsi commands quantum dlt 8000 tape system 5-27 inquiry command (12h) (continued) table 5–11 identifier descriptor — field descriptions field name description code set the value in this field indicates the type of data to be found in the identifier field. Code meaning 1 binary data 2 ascii data asso...

  • Page 172

    Scsi commands 5-28 quantum dlt 8000 tape system inquiry command (12h) (continued) the firmware build information page (vu) (c0h) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 page code (c0h) 2 reserved 3 page length (20h) 4 - 5 servo firmware checksum 6 - 7 servo eeprom ch...

  • Page 173

    Scsi commands quantum dlt 8000 tape system 5-29 inquiry command (12h) (continued) the subsystem components revision page (c1h) this page contains information used by quantum corporation about firmware, drive controller, and other dlt 8000 tape drive components. It is reserved for use by quantum corp...

  • Page 174

    Scsi commands 5-30 quantum dlt 8000 tape system inquiry command (12h) (continued) command support data an application client can request command support data by setting the cmddt bit of the inquiry command to 1, and specifying the scsi operation code of the command descriptor block (cdb) for which i...

  • Page 175

    Scsi commands quantum dlt 8000 tape system 5-31 inquiry command (12h) (continued) table 5–13 command support data page — field descriptions field description support the value of the support field describes the type of support that the tape drive provides for command support data. Value description ...

  • Page 176: 5.5

    Scsi commands 5-32 quantum dlt 8000 tape system 5.5 load unload command (1bh) the load unload command tells the target to load or unload the tape media in the tape cartridge. If no cartridge is in the tape drive, both load and unload return a check condition status with a not ready sense key set. Li...

  • Page 177

    Scsi commands quantum dlt 8000 tape system 5-33 load unload command (1bh) (continued) bit byte 7 6 5 4 3 2 1 0 0 operation code (1bh) 1 logical unit number reserved immed 2 reserved 3 reserved 4 reserved eot re-ten load 5 unused reserved flag link figure 5–13 load unload command descriptor block — d...

  • Page 178

    Scsi commands 5-34 quantum dlt 8000 tape system load unload command (1bh) (continued) table 5–14 load unload command descriptor block — field descriptions field name description immed immediate. If this bit is set to 1, status is returned as soon as the operation is started. If set to 0, status is r...

  • Page 179: 5.6

    Scsi commands quantum dlt 8000 tape system 5-35 5.6 locate command (2bh) the locate command is used to do high-speed positioning to the specified block address. The read position command can be used to obtain the block address, when writing, when particular blocks of data (a data file, for example) ...

  • Page 180

    Scsi commands 5-36 quantum dlt 8000 tape system locate command (2bh) (continued) table 5–15 locate command descriptor block — field descriptions field name description bt block type. The block type bit indicates how the block address field is interpreted. The first recorded object (block or filemark...

  • Page 181: 5.7

    Scsi commands quantum dlt 8000 tape system 5-37 5.7 log select command (4ch) the log select command allows the host to manage statistical information maintained by the tape drive about its own hardware parameters or about the installed tape medium. The description should be read in conjunction with ...

  • Page 182

    Scsi commands 5-38 quantum dlt 8000 tape system log select command (4ch) (continued) table 5–16 log select command descriptor block — field descriptions field name description pcr parameter code reset. If this bit is set to 1 and the parameter list length is set to 0, all accumulated values of page ...

  • Page 183

    Scsi commands quantum dlt 8000 tape system 5-39 log select command (4ch) (continued) 5.7.1 log detection summary in log select command descriptor block the following conditions constitute errors that are detected by the drive in relation to the cdb. The request sense data is set to illegal request, ...

  • Page 184

    Scsi commands 5-40 quantum dlt 8000 tape system log select command (4ch) (continued) 5.7.3 log select page format each log page begins with a 4-byte header followed by n number of log parameter blocks (one block for each parameter code). Each block, except for parameter code 05h is comprised of 8 by...

  • Page 185

    Scsi commands quantum dlt 8000 tape system 5-41 log select command (4ch) (continued) log parameters bit byte 7 6 5 4 3 2 1 0 0 -1 (msb) parameter code (lsb) 2 du ds tsd etc tmc rsv’d lp 3 parameter length 4 - 7 (msb) parameter value (lsb) figure 5–17 log parameters format table 5–18 log parameters f...

  • Page 186

    Scsi commands 5-42 quantum dlt 8000 tape system log select command (4ch) (continued) table 5–18 log parameters field descriptions (continued) field name description note byte 2 of the log parameter block is referred to as the parameter control byte; it is made up of six control bits plus one bit tha...

  • Page 187

    Scsi commands quantum dlt 8000 tape system 5-43 log select command (4ch) (continued) table 5–18 log parameters field descriptions (continued) field name description tmc threshold met criteria. Once the criteria specified in this field is met and the etc bit is 1 and the rlec bit in mode sense / sele...

  • Page 188

    Scsi commands 5-44 quantum dlt 8000 tape system log select command (4ch) (continued) the following conditions constitute errors in the parameter block that cause the drive to return check condition with sense data set to illegal request and additional send code invalid field in parameter list: • a p...

  • Page 189: 5.8

    Scsi commands quantum dlt 8000 tape system 5-45 5.8 log sense command (4dh) the log sense command allows the host to retrieve statistical information maintained by the tape drive about its own hardware parameters or about the installed tape medium. It is a complementary command to log select. Bit by...

  • Page 190

    Scsi commands 5-46 quantum dlt 8000 tape system log sense command (4dh) (continued) table 5–19 log sense command descriptor block — field descriptions field name description ppc parameter pointer control. This bit must be set to 0. A ppc of 0 indicates that the parameter data requested from the devi...

  • Page 191

    Scsi commands quantum dlt 8000 tape system 5-47 log sense command (4dh) (continued) table 5–19 log sense command descriptor block — field descriptions (continued) field name description page code the page code field identifies which log page is being requested by the initiator. If the page is not su...

  • Page 192

    Scsi commands 5-48 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.1 error detection summary in log sense command descriptor block the following conditions constitute errors detected by the drive relating to the log sense command descriptor block. The request sense data is set t...

  • Page 193

    Scsi commands quantum dlt 8000 tape system 5-49 log sense command (4dh) (continued) 5.8.2 supported pages log page (page 00h) when page 00h is requested, the 4-byte page header is returned, followed by the pages supported in ascending order, one byte for each. Bit byte 7 6 5 4 3 2 1 0 0 reserved pag...

  • Page 194

    Scsi commands 5-50 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.3 read (page 03h) / write (page 02h) error log sense page each log page begins with a 4-byte header followed by a number of log parameter blocks. Each block consists of 8 bytes except for parameter code 05h. The ...

  • Page 195

    Scsi commands quantum dlt 8000 tape system 5-51 log sense command (4dh) (continued) log parameters bit byte 7 6 5 4 3 2 1 0 0 -1 (msb) parameter code (lsb) 2 du ds tsd etc tmc rsv’d lp 3 parameter length 4 - 11 (msb) parameter value (lsb) figure 5–21 log parameters format for read / write error log ...

  • Page 196

    Scsi commands 5-52 quantum dlt 8000 tape system log sense command (4dh) (continued) table 5–21 log parameters for read / write error log sense page field descriptions (continued) field name description note: byte 2 of the log parameter block is referred to as the parameter control byte; it is made u...

  • Page 197

    Scsi commands quantum dlt 8000 tape system 5-53 log sense command (4dh) (continued) table 5–21 log parameters for read / write error log sense page field descriptions (continued) field name description lp list parameter. This bit is 0 since the parameter codes are treated as data counters. Parameter...

  • Page 198

    Scsi commands 5-54 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.4 last n error events page (07h) this page returns one parameter at a time that contains the ascii text for the specified event log. The parameter number field in the cdb specifies the log event to return. The lo...

  • Page 199

    Scsi commands quantum dlt 8000 tape system 5-55 log sense command (4dh) (continued) log parameters bit byte 7 6 5 4 3 2 1 0 0 -1 (msb) parameter code (lsb) 2 du ds tsd etc tmc rsv’d lp 3 parameter length 4 - n (msb) hex ascii string for event n (lsb) figure 5–23 log parameters format for last n erro...

  • Page 200

    Scsi commands 5-56 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.5 tapealert page (2eh) this page returns results of the tape drive’s on-going self diagnosis, so that the tape drive’s behavior can be monitored and high reliability ensured. The tapealert page is read from the t...

  • Page 201

    Scsi commands quantum dlt 8000 tape system 5-57 log sense command (4dh) (continued) tape alert log parameters bit byte 7 6 5 4 3 2 1 0 5n –1 to 5n (msb) parameter code (n) (lsb) 5n + 1 du ds tsd etc tmc rsv’d lp 5n + 2 parameter length (1) 5n + 3 value of tapealert flag (flag is set when bit 0 = 1; ...

  • Page 202

    Scsi commands 5-58 quantum dlt 8000 tape system log sense command (4dh) (continued) table 5–26 tape alert flags, severity levels, and meanings flag severity level * meaning 1 read warning warning problems reading data. There is no loss of data, but the tape drive’s performance is reduced. 2 write wa...

  • Page 203

    Scsi commands quantum dlt 8000 tape system 5-59 log sense command (4dh) (continued) table 5–26 tape alert flags, severity levels, and meanings (continued) flag severity level * meaning 22 expired cleaning media critical the cleaning cartridge that was used has expired. Wait for all tape drive operat...

  • Page 204

    Scsi commands 5-60 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.6 read / write compression page (32h) this page begins with a 4-byte header followed by the log parameter blocks of 6 or 8 bytes, depending on the parameter code selected. Log page header bit byte 7 6 5 4 3 2 1 0...

  • Page 205

    Scsi commands quantum dlt 8000 tape system 5-61 log sense command (4dh) (continued) log parameters for parameter codes 00h and 01h bit byte 7 6 5 4 3 2 1 0 0 -1 (msb) parameter code (lsb) 2 du ds tsd etc tmc rsv’d lp 3 02h 4 - n (msb) compression ratio x 100 (lsb) figure 5–27 log parameters format f...

  • Page 206

    Scsi commands 5-62 quantum dlt 8000 tape system log sense command (4dh) (continued) log parameters for parameter codes 02h through 09h bit byte 7 6 5 4 3 2 1 0 0 -1 (msb) parameter code (lsb) 2 du ds tsd etc tmc rsv’d lp 3 04h 4 - 7 (msb) counter value (lsb) figure 5–28 log parameters format for rea...

  • Page 207

    Scsi commands quantum dlt 8000 tape system 5-63 log sense command (4dh) (continued) table 5–29 log parameters for read / write compression ratio log sense page field descriptions (parameter codes 02h through 09h) (continued) field name description du disable update. Always 0. Ds disable save. Not su...

  • Page 208

    Scsi commands 5-64 quantum dlt 8000 tape system log sense command (4dh) (continued) 5.8.7 device wellness page (33h) the device wellness page returns information about any check conditions related to sense keys 1, 3, 4, and 9 logged by the tape drive. Up to 16 entries (parameter code 0000h to 000fh)...

  • Page 209

    Scsi commands quantum dlt 8000 tape system 5-65 log sense command (4dh) (continued) device wellness log sense page parameters (0000h - 000fh) bit byte 7 6 5 4 3 2 1 0 0 parameter code 1 reserved 2 du ds tsd etc tmc rsv’d lp 3 - 7 (msb) time stamp (lsb) 8 - 11 (msb) media id (lsb) 12 sense key 13 add...

  • Page 210

    Scsi commands 5-66 quantum dlt 8000 tape system log sense command (4dh) (continued) table 5–31 log parameters for device wellness log sense page field descriptions field name description parameter code parameter codes 0000h through 000fh are supported. This provides 16 log entries for error informat...

  • Page 211

    Scsi commands quantum dlt 8000 tape system 5-67 log sense command (4dh) (continued) 5.8.8 device status page (3eh) the device status page describes the current status of the tape drive. Figures 5-31 and 5-32 and table 5-32 describe the following header log parameter formats for the log sense device ...

  • Page 212

    Scsi commands 5-68 quantum dlt 8000 tape system log sense command (4dh) (continued) device status log sense page parameters bit byte 7 6 5 4 3 2 1 0 0 - 1 parameter code 2 du ds tsd etc tmc rsv’d lp 3 parameter length (04h) 4 - 7 (msb) parameter value (lsb) figure 5–32 log parameters format for devi...

  • Page 213

    Scsi commands quantum dlt 8000 tape system 5-69 log sense command (4dh) (continued) table 5–33 log parameters for device status log sense page field descriptions field name description parameter value parameter codes 0000h through 0005h are supported. Code description 0000h specifies device type. Fo...

  • Page 214

    Scsi commands 5-70 quantum dlt 8000 tape system log sense command (4dh) (continued) table 5–34 log parameters for device wellness log sense parameter 0001h (cleaning related) field descriptions field name description clnr set to 1 if a cleaning required condition exists. When the condition clears, t...

  • Page 215: 5.9

    Scsi commands quantum dlt 8000 tape system 5-71 5.9 mode select command (6) / (10) (15h / 55h) the mode select command (available in either 6- or 10-byte format) enables the host to configure the tape drive. Implementing mode select and mode sense requires “handshaking” between the host and the driv...

  • Page 216

    Scsi commands 5-72 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) mode select (6) command descriptor block — data format bit byte 7 6 5 4 3 2 1 0 0 operation code (15h) 1 logical unit number pf reserved sp (0) 2 - 3 reserved 4 parameter list length 5 unused res...

  • Page 217

    Scsi commands quantum dlt 8000 tape system 5-73 mode select command (6) / (10) (15h) / (55h) (continued) table 5–35 mode select (6) (10) command descriptor block — field descriptions field name description pf page format. The page format bit indicates that the data sent by the host after the mode se...

  • Page 218

    Scsi commands 5-74 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) bit byte 7 6 5 4 3 2 1 0 0 - 7 mode parameter header 8 - 15 mode parameter block descriptor (optional) 8 - n or 16 - n page(s) (optional) figure 5–36 mode select (10) mode parameter list — data f...

  • Page 219

    Scsi commands quantum dlt 8000 tape system 5-75 mode select command (6) / (10) (15h) / (55h) (continued) 5.9.1.1 mode parameter header the figures and tables that follow provide an illustration and description of the fields that make up the mode select (6) or (10) command’s mode parameter header. Bi...

  • Page 220

    Scsi commands 5-76 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–37 mode parameter header — field descriptions field name description media type this field is ignored by the mode select command. Buffered mode default = 1. The drive implements immediate...

  • Page 221

    Scsi commands quantum dlt 8000 tape system 5-77 mode select command (6) / (10) (15h) / (55h) (continued) 5.9.1.2 mode parameter block descriptor the figure and table that follow provide an illustration and description of the fields that make up the mode select command’s mode parameter block descript...

  • Page 222

    Scsi commands 5-78 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–38 mode parameter block descriptor — field descriptions field name description density code this field should match the current tape medium density; it is set to 0 if the density is unkno...

  • Page 223

    Scsi commands quantum dlt 8000 tape system 5-79 mode select command (6) / (10) (15h) / (55h) (continued) table 5–38 mode parameter block descriptor — field descriptions (continued) field name description block length this field specifies the length, in bytes, of each logical block transferred over t...

  • Page 224

    Scsi commands 5-80 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.2 read / write error recovery page (01h) the read / write error recovery page controls the drive’s response to error conditions that arise during the course of read and write command processi...

  • Page 225

    Scsi commands quantum dlt 8000 tape system 5-81 mode select command (6) / (10) (15h) / (55h) (continued) table 5–40 read/write error recovery page — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the n...

  • Page 226

    Scsi commands 5-82 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.3 disconnect / reconnect page (02h) the disconnect / reconnect page controls the drive’s behavior on the scsi bus and allows an initiator to tune bus performance. Bit byte 7 6 5 4 3 2 1 0 0 p...

  • Page 227

    Scsi commands quantum dlt 8000 tape system 5-83 mode select command (6) / (10) (15h) / (55h) (continued) table 5–41 disconnect / reconnect page — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the numb...

  • Page 228

    Scsi commands 5-84 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.4 control mode page (0ah) the control mode page provides control over several features such as tagged queuing, extended contingent allegiance, asynchronous event notification, and error loggi...

  • Page 229

    Scsi commands quantum dlt 8000 tape system 5-85 mode select command (6) / (10) (15h) / (55h) (continued) table 5–42 control mode page descriptor — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Page length the page length field indicates the num...

  • Page 230

    Scsi commands 5-86 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.5 data compression page (0fh) the data compression page specifies parameters for the control of data compression. This page allows the user to turn the tape drive’s compressed format on and o...

  • Page 231

    Scsi commands quantum dlt 8000 tape system 5-87 mode select command (6) / (10) (15h) / (55h) (continued) table 5–43 data compression page descriptor — field descriptions field name description page code the page code identifies the type of mode select page being transferred. A value of 0fh identifie...

  • Page 232

    Scsi commands 5-88 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.6 device configuration page (10h) the device configuration page controls the drive’s behavior on the scsi bus and allows an initiator to tune bus performance. Bit byte 7 6 5 4 3 2 1 0 0 ps (0...

  • Page 233

    Scsi commands quantum dlt 8000 tape system 5-89 mode select command (6) / (10) (15h) / (55h) (continued) table 5–44 device configuration page — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the number...

  • Page 234

    Scsi commands 5-90 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–44 device configuration page — field descriptions (continued) field name description avc automatic velocity control. Not supported; must be 0. Socf stop on consecutive filemarks. Not supp...

  • Page 235

    Scsi commands quantum dlt 8000 tape system 5-91 mode select command (6) / (10) (15h) / (55h) (continued) 5.9.7 medium partition page (11h) the drive supports the medium partition parameters page, which is used to specify the medium partitions. Bit byte 7 6 5 4 3 2 1 0 0 ps (0) 0 page code (11h) 1 ad...

  • Page 236

    Scsi commands 5-92 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–45 medium partition page descriptor — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the...

  • Page 237

    Scsi commands quantum dlt 8000 tape system 5-93 mode select command (6) / (10) (15h) / (55h) (continued) 5.9.8 tapealert page (1ch) the drive supports the tapealert page, which is, used to set/change the supported tapealert configuration options (use the mode sense command to read the settings of th...

  • Page 238

    Scsi commands 5-94 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–46 tapealert page format descriptor — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the...

  • Page 239

    Scsi commands quantum dlt 8000 tape system 5-95 mode select command (6) / (10) (15h) / (55h) (continued) table 5–46 tapealert page format descriptor — field descriptions (continued) field name description mrie method for reporting informational exceptions. The tape drive uses the contents of this fi...

  • Page 240

    Scsi commands 5-96 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.9 eeprom vendor unique page (3eh) the drive supports a vendor unique page that enables a user to modify savable parameters. Only one savable parameter may be changed per mode select command. ...

  • Page 241

    Scsi commands quantum dlt 8000 tape system 5-97 mode select command (6) / (10) (15h) / (55h) (continued) table 5–47 eeprom vendor unique page parameters name value rep. Default length (bytes) usage vendorid ascii quantum 8 vendor identification field in inquiry data productid ascii dlt 8000 16 produ...

  • Page 242

    Scsi commands 5-98 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–47 eeprom vendor unique page parameters (continued) name value rep. Default length (bytes) usage loaderlun ascii decimal 1 1 1 - 7 = lun to report media loader device on. Rewindonreset as...

  • Page 243

    Scsi commands quantum dlt 8000 tape system 5-99 mode select command (6) / (10) (15h) / (55h) (continued) table 5–47 eeprom vendor unique page parameters (continued) name value rep. Default length (bytes) usage forcereadsili ascii binary 0 1 to make variable read command handled as if the sili bit is...

  • Page 244

    Scsi commands 5-100 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–47 eeprom vendor unique page parameters (continued) name value rep. Default length (bytes) usage scsibusdmatimer ascii decimal 2 1 the number of seconds until the drive times out waiting...

  • Page 245

    Scsi commands quantum dlt 8000 tape system 5-101 table 5–47 eeprom vendor unique page parameters (continued) name value rep. Default length (bytes) usage thirdpartyden ascii decimal 0 1 value of default third party density. Requires enathirdpartydens = 1 enagranularity ascii binary 1 1 enables granu...

  • Page 246

    Scsi commands 5-102 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) as an example of an eeprom vendor unique page, the figure below shows a page that will modify the vendorid parameter to “xxxyy.” 0 0 0 page code (3eh) 1 page length (0fh) 2 “v” (76h) 3 “e” (65h)...

  • Page 247

    Scsi commands quantum dlt 8000 tape system 5-103 mode select command (6) / (10) (15h) / (55h) (continued) an example follows that illustrates an eeprom vendor unique page that modifies the forcedensity parameter to 4. 0 0 0 page code (3eh) 1 page length (0fh) 2 “f” (46h) 3 “o” (4fh) 4 “r” (52h) 5 “c...

  • Page 248

    Scsi commands 5-104 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) 5.9.10 changeable parameters within mode select the table below lists the mode select command’s changeable parameters and their default, minimum, and maximum values. Descriptions of the various ...

  • Page 249

    Scsi commands quantum dlt 8000 tape system 5-105 5.10 mode sense (6) / (10) command (1ah / 5ah) the mode sense command allows the drive to report its media type, and current, or changeable configuration parameters to the host. It is a complementary command to mode select. The command descriptor bloc...

  • Page 250

    Scsi commands 5-106 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) bit byte 7 6 5 4 3 2 1 0 0 operation code (5ah) 1 logical unit number rsv’d dbd reserved 2 pc page code 3 reserved 4 reserved 5 reserved 6 reserved 7 - 8 (msb) allocation length (lsb) 9 unused rese...

  • Page 251

    Scsi commands quantum dlt 8000 tape system 5-107 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–49 mode sense control descriptor block — field descriptions field name description dbd disable block descriptors. If 0, device returns the block descriptor data. If set to 1, block descript...

  • Page 252

    Scsi commands 5-108 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.1 mode sense data headers the mode sense (6) and mode sense (10) headers are illustrated below. Bit byte 7 6 5 4 3 2 1 0 0 mode sense data length 1 media type 2 wp buffered mode speed 3 block ...

  • Page 253

    Scsi commands quantum dlt 8000 tape system 5-109 mode sense (6) / (10) command (1ah / 5ah) (continued) bit byte 7 6 5 4 3 2 1 0 0 - 1 (msb) mode sense data length (lsb) 2 media type 3 wp buffered mode speed 4 reserved 5 reserved 6 - 7 (msb) block descriptor length (08h) (lsb) figure 5–54 mode sense ...

  • Page 254

    Scsi commands 5-110 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–50 mode sense data header — field descriptions field name description mode sense data length this field specifies the length (in bytes) of the mode sense data that follows that is available...

  • Page 255

    Scsi commands quantum dlt 8000 tape system 5-111 mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.2 mode sense block descriptor the illustration below describes the mode sense block descriptor that follows the mode sense header. Bit byte 7 6 5 4 3 2 1 0 0 density code 1 - 3 (msb) number of...

  • Page 256

    Scsi commands 5-112 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–51 mode sense block descriptor — field descriptions field name description density code this field should match the current tape medium density; it is set to 0 if the density is unknown. De...

  • Page 257

    Scsi commands quantum dlt 8000 tape system 5-113 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–50 mode sense block descriptor — field descriptions (continued) field name description number of blocks this field is sent as 0, indicating that all of the remaining logical blocks on the t...

  • Page 258

    Scsi commands 5-114 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3 mode sense mode pages the illustration below depicts the variable length page descriptor. Bit byte 7 6 5 4 3 2 1 0 0 ps 0 page code 1 additional page length 2 page defined or vendor-unique p...

  • Page 259

    Scsi commands quantum dlt 8000 tape system 5-115 mode sense (6) / (10) command (1ah / 5ah) (continued) page codes and pages that are supported are: page code description sense / select section 00h no requested page sense --- 01h read / write error recovery page both 5.10.3.1 02h disconnect / reconne...

  • Page 260

    Scsi commands 5-116 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.1 read / write error recovery page (01h) the tape drive supports the error recovery page for read and write operations. The format for the page is illustrated below. Bit byte 7 6 5 4 3 2 1 0...

  • Page 261

    Scsi commands quantum dlt 8000 tape system 5-117 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–53 read / write error recovery page — field descriptions field name description ps parameters savable. Must be 0, the supported parameters cannot be saved (savable pages are not supported)....

  • Page 262

    Scsi commands 5-118 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.2 disconnect / reconnect page (02h) the tape drive supports the disconnect / reconnect page. The format for the page is illustrated below. Bit byte 7 6 5 4 3 2 1 0 0 ps 0 page code (02h) 1 a...

  • Page 263

    Scsi commands quantum dlt 8000 tape system 5-119 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–54 disconnect / reconnect error recovery page — field descriptions field name description ps parameters savable. When 0, the supported parameters cannot be saved (savable pages are not supp...

  • Page 264

    Scsi commands 5-120 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.3 control mode page (0ah) the control mode page allows the user to determine whether the tape drive returns a check condition status when one of the write and read counters has reached a spe...

  • Page 265

    Scsi commands quantum dlt 8000 tape system 5-121 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–55 control mode page — field descriptions field name description page length the value in this field indicates the number of bytes in the control mode page being transferred. The value for ...

  • Page 266

    Scsi commands 5-122 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.4 data compression page (0fh) the data compression page specifies parameters for the control of data compression. Bit byte 7 6 5 4 3 2 1 0 0 ps (0) rsv’d page code (0fh) 1 page length (0e) 2...

  • Page 267

    Scsi commands quantum dlt 8000 tape system 5-123 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–56 data compression page — field descriptions field name description ps parameters savable. Not supported; must be 0. Page length the value in this field indicates the number of bytes in th...

  • Page 268

    Scsi commands 5-124 quantum dlt 8000 tape system 5.10.3.5 device configuration page (10h) the tape drive supports the device configuration page. The format for the page is illustrated below. Bit byte 7 6 5 4 3 2 1 0 0 ps (0) 0 page code (10h) 1 additional page length (0eh) 2 rsv’d cap (0) caf (0) ac...

  • Page 269

    Scsi commands quantum dlt 8000 tape system 5-125 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–57 device configuration page — field descriptions field name description ps parameters savable. Not supported; must be 0. Additional page length this field indicates the number of bytes in ...

  • Page 270

    Scsi commands 5-126 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–57 device configuration page — field descriptions (continued) field name description gap size not supported. Set to 0. Eod defined end of data. Set to 00h. Eeg enable eod generation bit. Se...

  • Page 271

    Scsi commands quantum dlt 8000 tape system 5-127 mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.6 medium partition page (11h) the tape drive supports the medium partition page. The format for the page is illustrated below. Bit byte 7 6 5 4 3 2 1 0 0 ps (0) 0 page code (11h) 1 additiona...

  • Page 272

    Scsi commands 5-128 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–58 medium partition page — field descriptions field name description ps parameters savable. Not supported; must be 0. Additional page length this field indicates the number of bytes in the ...

  • Page 273

    Scsi commands quantum dlt 8000 tape system 5-129 mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.7 tapealert page (1ch) the tapealert configuration settings can be read via the mode sense command’s tapealert page. Bit byte 7 6 5 4 3 2 1 0 0 ps (0) 0 page code (1ch) 1 additional page len...

  • Page 274

    Scsi commands 5-130 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–59 tapealert page format descriptor — field descriptions field name description ps parameters savable. For mode select, this bit must be 0. Additional page length this field indicates the n...

  • Page 275

    Scsi commands quantum dlt 8000 tape system 5-131 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–59 tapealert page format descriptor — field descriptions (continued) field name description test not supported. Logerr error log. Not supported mrie method for reporting informational excep...

  • Page 276

    Scsi commands 5-132 quantum dlt 8000 tape system mode sense (6) / (10) command (1ah / 5ah) (continued) 5.10.3.8 eeprom vendor unique page (3eh) the tape drive supports the eeprom vendor unique page (3eh). All the eeprom parameters settable via the mode select’s eeprom vendor unique page are returned...

  • Page 277

    Scsi commands quantum dlt 8000 tape system 5-133 5.11 persistent reservation in command (5eh) the persistent reservation in command is a 10-byte command used to obtain information about persistent reservations and reservations that are active within a device server. It is used in conjunction with th...

  • Page 278

    Scsi commands 5-134 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) table 5–60 persistent reservation in command — field descriptions data field description service action service actions that require information about persistent reservation and registrations may req...

  • Page 279

    Scsi commands quantum dlt 8000 tape system 5-135 persistent reservation in command (5eh) (continued) the figure and table below illustrate and describe the data fields of read key data parameters. Bit byte 7 6 5 4 3 2 1 0 0 - 3 (msb) generation (lsb) 4 - 7 (msb) additional length (n – 7) (lsb) (rese...

  • Page 280

    Scsi commands 5-136 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) table 5–61 read keys parameters — field descriptions data field description generation the value in this field is a 32-bit counter in the device server that is incremented each time a persistent rese...

  • Page 281

    Scsi commands quantum dlt 8000 tape system 5-137 persistent reservation in command (5eh) (continued) the figure and table below illustrate and describe the data fields of read reservations data parameters. Bit byte 7 6 5 4 3 2 1 0 0 - 3 (msb) generation (lsb) 4 - 7 (msb) additional length (n – 7) (l...

  • Page 282

    Scsi commands 5-138 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) the figure and table below illustrate and describe the data fields of each read reservations descriptor’s data fields. Bit byte 7 6 5 4 3 2 1 0 0 - 7 (msb) reservation key (lsb) 8 - 11 (msb) scope-sp...

  • Page 283

    Scsi commands quantum dlt 8000 tape system 5-139 persistent reservation in command (5eh) (continued) table 5–63 persistent reservation in read reservations descriptor — field descriptions data field description reservation key the reservation key field contains an 8-byte value that identifies the re...

  • Page 284

    Scsi commands 5-140 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) table 5–63 persistent reservation in read reservations descriptor — field descriptions (continued) data field description type the value of the type field specifies the characteristics of the persist...

  • Page 285

    Scsi commands quantum dlt 8000 tape system 5-141 persistent reservation in command (5eh) (continued) table 5–64 persistent reservation type codes and their meanings code name description 0h read shared reads: shared; any application client on any initiator may execute commands that perform transfers...

  • Page 286

    Scsi commands 5-142 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) table 5-64 persistent reservation type codes and their meanings (continued) code name description 3h exclusive; any command from any initiator other than the initiator holding the persistent reservat...

  • Page 287

    Scsi commands quantum dlt 8000 tape system 5-143 persistent reservation in command (5eh) (continued) table 5–64 persistent reservation type codes and their meanings (continued) code name description 5h write exclusive, registrants only reads: shared; any application client on any initiator may execu...

  • Page 288

    Scsi commands 5-144 quantum dlt 8000 tape system persistent reservation in command (5eh) (continued) table 5–65 when do conflicts between existing reservations and new reservations exist? Persistent reservation already held persistent reservation being attempted read shared lu ex write exclusive lu ...

  • Page 289

    Scsi commands quantum dlt 8000 tape system 5-145 5.12 persistent reservation out command (5fh) the persistent reservation out command is a 10-byte command used to reserve a logical unit or an extent within a logical unit for the exclusive or shared use by an initiator. Note that reservations are not...

  • Page 290

    Scsi commands 5-146 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) bit byte 7 6 5 4 3 2 1 0 0 operation code (5fh) 1 reserved service action 2 scope type 3 - 6 reserved 7 – 8 (msb) parameter list length (18h) (lsb) 9 unused reserved flag link figure 5–68 persistent...

  • Page 291

    Scsi commands quantum dlt 8000 tape system 5-147 persistent reservation out command (5fh) (continued) table 5–66 persistent reservation out command — field descriptions data field description service action service actions that require information about persistent reservation and registrations may r...

  • Page 292

    Scsi commands 5-148 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) table 5–66 persistent reservation out command — field descriptions (continued) data field description scope the value in this field indicates whether a persistent reservation applies to an entire lo...

  • Page 293

    Scsi commands quantum dlt 8000 tape system 5-149 persistent reservation out command (5fh) (continued) table 5–66 persistent reservation out command — field descriptions (continued) data field description type the value of the type field specifies the characteristics of the persistent reservation bei...

  • Page 294

    Scsi commands 5-150 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) table 5–67 persistent reservation out command’s service action descriptions code name description 00h register when the command executes a register service action, it registers a reservation key wit...

  • Page 295

    Scsi commands quantum dlt 8000 tape system 5-151 persistent reservation out command (5fh) (continued) table 5–67 persistent reservation out command’s service action descriptions (continued) code name description 02h release a persistent reservation out command with release service action removes a p...

  • Page 296

    Scsi commands 5-152 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) table 5–67 persistent reservation out command’s service action descriptions (continued) code name description 04h pre- empt a persistent reservation out command with a successful pre-empt service ac...

  • Page 297

    Scsi commands quantum dlt 8000 tape system 5-153 persistent reservation out command (5fh) (continued) table 5–67 persistent reservation out command’s service action descriptions (continued) code name description 05h pre-empt & clear a persistent reservation out command with a pre-empt & clear servic...

  • Page 298

    Scsi commands 5-154 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) table 5–68 presents the definitions of the characters of the available “type” values from the type field of the persistent reservation in read reservations parameters. Each of the codes provides han...

  • Page 299

    Scsi commands quantum dlt 8000 tape system 5-155 persistent reservation out command (5fh) (continued) table 5-68 persistent reservation type codes and their meanings (continued) code name description 3h exclusive access reads: exclusive; any command from any initiator other than the initiator holdin...

  • Page 300

    Scsi commands 5-156 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) table 5-68 persistent reservation type codes and their meanings (continued) code name description 6h exclusive access, registrants only reads: exclusive; any command from an initiator that has not p...

  • Page 301

    Scsi commands quantum dlt 8000 tape system 5-157 persistent reservation out command (5fh) (continued) table 5-69 persistent reservation out parameter list — field descriptions data field description reservation key this field contains an 8-byte token that is provided by the application client to the...

  • Page 302

    Scsi commands 5-158 quantum dlt 8000 tape system persistent reservation out command (5fh) (continued) the table below illustrates which fields are set by the application client and interpreted by the device server for each service and scope value. Table 5-70 device server interpretation of service a...

  • Page 303

    Scsi commands quantum dlt 8000 tape system 5-159 5.13 prevent / allow medium removal command (1eh) this command enables or disables the unloading of the tape cartridge. Bit byte 7 6 5 4 3 2 1 0 0 operation code (1eh) 1 logical unit number reserved 2 - 3 reserved 4 reserved prevent 5 unused reserved ...

  • Page 304: 5.14 Read Command  (08H)

    Scsi commands 5-160 quantum dlt 8000 tape system 5.14 read command (08h) this command transfers one or more data blocks or bytes to the initiator starting with the next block on the tape. Bit byte 7 6 5 4 3 2 1 0 0 operation code (08h) 1 logical unit number reserved sili fixed 2 - 4 (msb) transfer l...

  • Page 305

    Scsi commands quantum dlt 8000 tape system 5-161 read command (08h) (continued) table 5–72 read command descriptor block — field descriptions (continued) field name description fixed this bit specifies whether fixed-length or variable-length blocks are to be transferred, and gives meaning to the tra...

  • Page 306

    Scsi commands 5-162 quantum dlt 8000 tape system read command (08h) (continued) the meaning of eom is different for a read command than for a write-related command. Eom is reported only when the physical eom or end-of-partition (eop) is encountered. The drive returns a check condition status. The eo...

  • Page 307

    Scsi commands quantum dlt 8000 tape system 5-163 5.15 read block limits command (05h) the read block limits command directs the tape drive to report its block length limits. Bit byte 7 6 5 4 3 2 1 0 0 operation code (05h) 1 logical unit number reserved 2 - 4 reserved 5 unused reserved flag link figu...

  • Page 308

    Scsi commands 5-164 quantum dlt 8000 tape system read block limits command (05h) (continued) the read block limits data shown below is sent during the data in phase of the command. The command does not reflect the currently selected block size, only the available limits. Mode sense is the command th...

  • Page 309

    Scsi commands quantum dlt 8000 tape system 5-165 5.16 read buffer command (3ch ) the read buffer command is used in conjunction with write buffer as a diagnostic function for testing the drive’s data buffer for possible diagnostic data and for checking the integrity of the scsi bus. In addition, by ...

  • Page 310

    Scsi commands 5-166 quantum dlt 8000 tape system read buffer command (3ch) (continued) table 5–74 read buffer command descriptor block — field descriptions field name description mode the tape drive supports the following values within this field. If any non-supported value is set, the drive termina...

  • Page 311

    Scsi commands quantum dlt 8000 tape system 5-167 read buffer command (3ch) (continued) 5.16.1 combined header and data mode in this mode, the tape drive returns a 4-byte header followed by data bytes. The drive terminates the data in phase when the allocation length bytes of header and data have bee...

  • Page 312

    Scsi commands 5-168 quantum dlt 8000 tape system read buffer command (3ch) (continued) bit byte 7 6 5 4 3 2 1 0 0 offset boundaries (0ch) 1 - 3 (msb) buffer capacity (lsb) figure 5–76 read buffer descriptor — data format.

  • Page 313

    Scsi commands quantum dlt 8000 tape system 5-169 5.17 read position command (34h ) the read position command is used to read a position identifier or scsi logical block address (lba). The locate command uses this identifier to position back to this same logical position in a high-performance fashion...

  • Page 314

    Scsi commands 5-170 quantum dlt 8000 tape system read position command (34h) (continued) note the drive returns check condition with unit not ready sense key with the read position command if the media is not ready to be accessed. 5.17.1 standard read position data when tclp and long bits are both s...

  • Page 315

    Scsi commands quantum dlt 8000 tape system 5-171 read position command (34h) (continued) table 5–77 read position data — field descriptions field name description bop beginning of partition. When set to 1, indicates that the logical unit is at the beginning of partition in the current partition. Whe...

  • Page 316

    Scsi commands 5-172 quantum dlt 8000 tape system read position command (34h) (continued) 5.17.2 total current logical position when tclp and long bits are both set to 1, the data takes the following format: bit byte 7 6 5 4 3 2 1 0 0 bop eop reserved rsv’d bpu (0) reserved 1 - 3 reserved 4 - 7 (msb)...

  • Page 317

    Scsi commands quantum dlt 8000 tape system 5-173 5.18 receive diagnostic results command (1ch) the receive diagnostic results command fetches the results of the last send diagnostic command sent to the tape drive. Bit byte 7 6 5 4 3 2 1 0 0 operation code (1ch) 1 logical unit number reserved 2 reser...

  • Page 318

    Scsi commands 5-174 quantum dlt 8000 tape system receive diagnostic results command (1ch) (continued) the following data is returned by the drive as a result of the receive diagnostic command. Note that a request sense command should be used to obtain more detailed information following a check cond...

  • Page 319

    Scsi commands quantum dlt 8000 tape system 5-175 5.19 release unit (6) command (17h) the release unit (6) command is a 6-byte command that releases the drive if it is currently reserved by the requesting initiator. It is not an error to release the tape drive if it is not currently reserved by the r...

  • Page 320

    Scsi commands 5-176 quantum dlt 8000 tape system release unit (6) command (17h) (continued) table 5–80 release unit (6) command data — field descriptions field name description 3rdpty the third party release option for release unit allows an initiator to release a logical unit that was previously re...

  • Page 321

    Scsi commands quantum dlt 8000 tape system 5-177 5.20 release unit (10) command (57h) the release unit and the reserve unit commands are used for contention resolution in multiple-initiator systems. The release (10) command is a 10-byte command used to release a previously reserved logical unit. The...

  • Page 322

    Scsi commands 5-178 quantum dlt 8000 tape system release unit (10) command (57h) (continued) table 5–81 release unit (10) command — field descriptions field description 3rdpty third party release allows an initiator to release a logical unit that was previously reserved. If the value in this field i...

  • Page 323

    Scsi commands quantum dlt 8000 tape system 5-179 5.21 report density support command (44h) the report density support command is a 10-byte command used to request that information about the densities supported by the logical unit be sent to the application client. Note that a reservation conflict wi...

  • Page 324

    Scsi commands 5-180 quantum dlt 8000 tape system report density support command (44h) (continued) table 5–82 report density support command — field descriptions data field description media when this bit = 0, it indicates that the device server will return density support data blocks for densities s...

  • Page 325

    Scsi commands quantum dlt 8000 tape system 5-181 report density support command (44h) (continued) table 5–83 report density support header — field descriptions data field description available density support length this value within this field specifies the number of bytes in the data that follows ...

  • Page 326

    Scsi commands 5-182 quantum dlt 8000 tape system report density support command (44h) (continued) bit byte 7 6 5 4 3 2 1 0 0 primary density code 1 secondary density code 2 wrtok dup deflt reserved 3 - 4 reserved 5 – 7 (msb) bits per mm (lsb) 8 – 9 (msb) media width (lsb) 10–11 (msb) tracks (lsb) 12...

  • Page 327

    Scsi commands quantum dlt 8000 tape system 5-183 report density support command (44h) (continued) table 5-84 density support data block descriptor — field descriptions data field description primary density code this field contains the value returned by a mode sense command for the density described...

  • Page 328

    Scsi commands 5-184 quantum dlt 8000 tape system report density support command (44h) (continued) table 5-84 density support data block descriptor — field descriptions (continued) data field description bit per mm bits per millimeter. The value in this field indicates the number of bits per millimet...

  • Page 329

    Scsi commands quantum dlt 8000 tape system 5-185 5.22 report luns command (a0h) the report luns command requests that the peripheral device logical unit numbers of known logical units in the target be sent to the applications client. The command only returns information about the logical units to wh...

  • Page 330

    Scsi commands 5-186 quantum dlt 8000 tape system report luns command (0ah) (continued) bit byte 7 6 5 4 3 2 1 0 0 - 3 (msb) lun list length (n – 7) (lsb) 4 - 7 reserved 8 - 15 (msb) lun (first lun) (lsb) • • • • • • n-7 – n lun (last lun, if more than one) figure 5–88 lun reporting parameter list — ...

  • Page 331

    Scsi commands quantum dlt 8000 tape system 5-187 5.23 request sense command (03h) the request sense command causes the tape drive to transfer detailed sense data to the initiator. Bit byte 7 6 5 4 3 2 1 0 0 operation code (03h) 1 logical unit number reserved 2 reserved 3 reserved 4 allocation length...

  • Page 332

    Scsi commands 5-188 quantum dlt 8000 tape system request sense command (03h) (continued) the request sense command causes the tape drive to transfer detailed sense data to the initiator. The sense data is valid for a check condition or reservation conflict status returned on the previous command. Th...

  • Page 333

    Scsi commands quantum dlt 8000 tape system 5-189 request sense command (03h) (continued) bit byte 7 6 5 4 3 2 1 0 0 valid error code 1 segment number (0) 2 filemark eom ili reserve d sense key 3 - 6 (msb) information bytes (lsb) 7 additional sense length 8 - 11 (msb) command-specific information byt...

  • Page 334

    Scsi commands 5-190 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–87 request sense data — field descriptions field name description valid when set to 1, this field indicates that the information bytes contain valid information as defined in the ansi scsi-2 specificatio...

  • Page 335

    Scsi commands quantum dlt 8000 tape system 5-191 request sense command (03h) (continued) table 5–87 request sense data — field descriptions (continued) field name description additional sense length this field specifies the number of additional sense bytes to follow. If the allocation length of the ...

  • Page 336

    Scsi commands 5-192 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–87 request sense data — field descriptions (continued) field name description tape motion hours this field reports the number of tape motion (i.E., head wear) hours. Format is given as a hexadecimal word...

  • Page 337

    Scsi commands quantum dlt 8000 tape system 5-193 request sense command (03h) (continued) table 5–88 supported sense keys sense key description 0h no sense. Check the filemark/eom/ili bits and the additional sense code/additional sense code qualifier bytes. 1h recovered error. This can be caused by r...

  • Page 338

    Scsi commands 5-194 quantum dlt 8000 tape system request sense command (03h) (continued) the following table provides the additional sense codes (ascs) and additional sense code qualifiers (ascqs) that may be reported. Additional information, explanations, or suggestions for action are included in s...

  • Page 339

    Scsi commands quantum dlt 8000 tape system 5-195 request sense command (03h) (continued) table 5–89 supported asc / ascq in hex (continued) sense key asc ascq meaning 02h not ready 04 00 unit not ready, cause non-reportable 04 01 unit not ready, calibration in process 04 02 unit not ready, load comm...

  • Page 340

    Scsi commands 5-196 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–89 supported asc / ascq in hex (continued) sense key asc ascq meaning 04h hardware error 08 00 lun communication failure 08 01 lun communication timeout failure 0c 80 write scsi fifo crc error 11 80 read...

  • Page 341

    Scsi commands quantum dlt 8000 tape system 5-197 request sense command (03h) (continued) table 5–89 supported asc / ascq in hex (continued) sense key asc ascq meaning 04h hardware error (cont.) 51 00 erase failure 53 00 media load/eject failure 53 01 unload tape failure 84 01 bhc test failed 05h ill...

  • Page 342

    Scsi commands 5-198 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–89 supported asc / ascq in hex (continued) sense key asc ascq meaning 05h illegal request (cont.) 3b 0d media destination element full 3b 0e media source element empty 3d 00 invalid bits in id message 53...

  • Page 343

    Scsi commands quantum dlt 8000 tape system 5-199 request sense command (03h) (continued) table 5–89 supported asc / ascq in hex (continued) sense key asc ascq meaning 0bh command aborted 43 00 message error 44 80 unexpected selection interrupt 44 82 command complete sequence failure 44 83 scsi chip,...

  • Page 344

    Scsi commands 5-200 quantum dlt 8000 tape system filemark, end of medium (eom), and incorrect length indicator (ili) bits filemark (byte 2, bit 7), eom (byte 2, bit 6), and ili (byte 2, bit 5) are names of fields in the request sense command. Any of these bits may be set to a 1 even though the addit...

  • Page 345

    Scsi commands quantum dlt 8000 tape system 5-201 5.24 reserve unit (6) command (16h) the reserve unit (6) command is a 6-byte command that reserves the specified tape drive for exclusive use by the requesting initiator or for another specified scsi device. Bit byte 7 6 5 4 3 2 1 0 0 operation code (...

  • Page 346

    Scsi commands 5-202 quantum dlt 8000 tape system reserve unit (6) command (16h) (continued) table 5–90 reserve unit (6) command data — field descriptions field name description 3rdpty the third party reservation option for reserve unit (6) allows an initiator to reserve a logical unit for another sc...

  • Page 347

    Scsi commands quantum dlt 8000 tape system 5-203 reserve unit (6) command (16h) (continued) an initiator that holds a current reservation may modify that reservation (for example, to switch third parties) by issuing another reserve unit (6) command to the tape drive. Medium changer considerations fo...

  • Page 348

    Scsi commands 5-204 quantum dlt 8000 tape system 5.25 reserve unit (10) command (56h) the reserve unit and the release unit commands are used for contention resolution in multiple-initiator systems. The reserve unit (10) command is a 10-byte command that is used to reserve a logical unit. The reserv...

  • Page 349

    Scsi commands quantum dlt 8000 tape system 5-205 reserve unit (10) command (56h) (continued) table 5–91 reserve unit (10) command — field descriptions field description 3rd pty when set to 1, it indicates that the third party device id field is valid. Longid when 0, indicates that the third party de...

  • Page 350

    Scsi commands 5-206 quantum dlt 8000 tape system reserve (10) command (56h) (continued) table 5–91 reserve unit (10) command — field descriptions (continued) field description extent if 0, requests that the entire logical unit be reserved for use only by the initiator until the request is supplanted...

  • Page 351

    Scsi commands quantum dlt 8000 tape system 5-207 reserve unit (10) command (56h) (continued) reladr is always 0: the dlt 8000 tape drive does not support relative addressing. The reservation type field defines the type of reservation in effect for the extent being reserved. Available types of reserv...

  • Page 352

    Scsi commands 5-208 quantum dlt 8000 tape system reserve unit (10) command (56h) (continued) if the longid bit = 1 and the extent bit = 0, then the parameter list length is eight and the parameter list has the format shown below. Bit byte 7 6 5 4 3 2 1 0 0 - 7 (msb) third party device id (lsb) figur...

  • Page 353: 5.26 Rewind Command  (01H)

    Scsi commands quantum dlt 8000 tape system 5-209 5.26 rewind command (01h) the rewind command directs the tape drive to position the tape at the beginning of the currently active partition (for dlttape drives, this is bom). Before rewinding, the tape drive writes any write data that is in the buffer...

  • Page 354

    Scsi commands 5-210 quantum dlt 8000 tape system 5.27 send diagnostic command (1dh) the send diagnostic command directs the tape drive to perform its self-diagnostic tests. It can also be used to invoke the basic health check (bhc) diagnostic test. Note that the bhc feature is provided for use only ...

  • Page 355

    Scsi commands quantum dlt 8000 tape system 5-211 send diagnostic command (1dh) (continued) two levels of unit-resident diagnostic tests can be accessed: electronics self-test (level 1 test) to invoke this level of diagnostic test, a major portion of the controller hardware and software must be funct...

  • Page 356

    Scsi commands 5-212 quantum dlt 8000 tape system send diagnostic command (1dh) (continued) the following table illustrates the possible settings of the selftst, devofl, and unitofl bits and the effects of each setting on the resulting self-test: table 5–95 send diagnostic cdb bits selftst, devofl, a...

  • Page 357

    Scsi commands quantum dlt 8000 tape system 5-213 send diagnostic command (1dh) (continued) table 5–96 send diagnostic parameter list — field descriptions field name description pattern number indicates the type of data pattern to be used during the diagnostic test. Pattern name data in hex 0h rotate...

  • Page 358

    Scsi commands 5-214 quantum dlt 8000 tape system send diagnostic command (1dh) (continued) table 5–96 send diagnostic parameter list — field descriptions (continued) field name description block count this field specifies how many blocks to write / read to and from starting on track 0, then moving t...

  • Page 359

    Scsi commands quantum dlt 8000 tape system 5-215 send diagnostic command (1dh) (continued) if the specified diagnostic test passes, a good status is returned. Otherwise, a check condition is generated and the sense data contains information about the failure. Table 5–97 sense keys used for send diag...

  • Page 360: 5.28  Space Command  (11H)

    Scsi commands 5-216 quantum dlt 8000 tape system 5.28 space command (11h) the space command provides a variety of positioning functions that are determined by code and count fields in the command descriptor block. Both forward (toward end of medium/end of partition) and reverse (toward beginning of ...

  • Page 361

    Scsi commands quantum dlt 8000 tape system 5-217 space command (11h) (continued) table 5–99 space command data — field descriptions (continued) field name description count when spacing over blocks or marks, the count field is interpreted as follows: a positive value n causes forward motion over n b...

  • Page 362

    Scsi commands 5-218 quantum dlt 8000 tape system 5.29 test unit ready command (00h) the test unit ready command checks the tape drive to ensure that the unit is ready for commands involving tape movement. If the drive has a tape loaded, the command returns a good status. Otherwise, check condition i...

  • Page 363

    Scsi commands quantum dlt 8000 tape system 5-219 5.30 verify command (13h) the verify command directs the tape drive to verify one or more blocks beginning with the next block on the tape. Both crc and edcs are validated. Bit byte 7 6 5 4 3 2 1 0 0 operation code (13h) 1 logical unit number reserved...

  • Page 364

    Scsi commands 5-220 quantum dlt 8000 tape system 5.31 write command (0ah) the write command transfers one or more blocks from the host to the current logical position. When in buffered mode (see mode select), the tape drive reports good status on write commands as soon as this data block has been tr...

  • Page 365

    Scsi commands quantum dlt 8000 tape system 5-221 write command (0ah) (continued) table 5–101 write command data — field descriptions field name description fixed the fixed bit specifies both the meaning of the transfer length field and whether fixed-length or variable-length blocks are to be transfe...

  • Page 366

    Scsi commands 5-222 quantum dlt 8000 tape system write command (0ah) (continued) if the tape drive encounters the physical end of medium (eom) when attempting write, a check condition status is returned. Within the sense data, the eom and valid bits are set, and the sense key field is set to volume ...

  • Page 367

    Scsi commands quantum dlt 8000 tape system 5-223 5.32 write buffer command (3bh) the write buffer command is used with read buffer as a diagnostic function for testing the device data buffer, dma engine, scsi bus interface hardware, and scsi bus integrity. It is also used for downloading and updatin...

  • Page 368

    Scsi commands 5-224 quantum dlt 8000 tape system write buffer command (3bh) (continued) table 5–102 write buffer command data — field descriptions (continued) field name description buffer id for all of the modes described for the mode field, only a buffer id of 0 is supported. If the buffer id fiel...

  • Page 369

    Scsi commands quantum dlt 8000 tape system 5-225 write buffer command (3bh) (continued) the tape drive must be empty of tape medium to allow downloading of an image. This is a safeguard against accidentally starting a firmware update. If a tape cartridge is loaded when all or part of a firmware imag...

  • Page 370

    Scsi commands 5-226 quantum dlt 8000 tape system 5.33 write filemarks command (10h) the write filemarks command directs the tape drive to write the specified number of filemarks beginning at the current logical position on tape. If the immediate bit is not set, any data or filemarks in the write cac...

  • Page 371

    Scsi commands quantum dlt 8000 tape system 5-227 write filemarks command (10h) (continued) table 5–103 write filemarks command data — field descriptions field name description wsmk write setmark. Must be 0. This tape drive does not support setmarks. Immed immediate. When this bit is set to 1, the ta...

  • Page 373: Appendix A

    Quantum dlt 8000 tape system a-1 appendix a definition of vendor unique sense data information this appendix lists the internal status codes with their descriptions. The internal status code is located at byte offset 18 of the request sense data and may be available for certain types of failures. No...

  • Page 374

    Appendix a: definition of vendor unique sense data information a-2 quantum dlt 8000 tape system table a–1 internal status codes (continued) decimal hexadecimal description 14 0e successive blocks missing across objects 15 0f drive state not valid for command 16 10 drive error 17 11 drive communicati...

  • Page 375

    Appendix a: definition of vendor unique sense data information quantum dlt 8000 tape system a-3 table a–1 internal status codes (continued) decimal hexadecimal description 41 29 invalid destination slot 42 2a source slot empty 43 2b destination slot full 44 2c medium changer motion error 45 2d mediu...

  • Page 376

    Appendix a: definition of vendor unique sense data information a-4 quantum dlt 8000 tape system.

  • Page 377: Appendix B

    Quantum dlt 8000 tape system b-1 appendix b eeprom-resident bugcheck and event logs this appendix provides an explanation of the event logs (information packets) stored in semi-permanent, non-volatile memory of the tape drive. These packets can be retrieved via the scsi log sense command with page c...

  • Page 378

    Appendix b: eeprom-resident bugcheck and event logs b-2 quantum dlt 8000 tape system b.2 bugcheck packets bugchecks are the result of some firmware-detected errors. For example, a hardware failure or an internal system consistency failure may cause a bugcheck. These events cause bugcheck packets to ...

  • Page 379

    Appendix b: eeprom-resident bugcheck and event logs quantum dlt 8000 tape system b-3 b.2.1 post failure packets post failure packets are stored whenever the power on self test logic detects a failure of any kind. Each failure is encoded as a 4-byte vector. In some cases, multiple vectors may be stor...

  • Page 380

    Appendix b: eeprom-resident bugcheck and event logs b-4 quantum dlt 8000 tape system directory failure event log packets directory failure event logs are written when a directory read or directory write request fails for any reason. Table b—3 provides the description of important fields within the p...

  • Page 381: Appendix C

    Quantum dlt 8000 tape system c-1 appendix c updating the firmware this appendix explains how to update the tape system’s pcba-resident firmware. C.1 overview using the tape drive’s front panel and a tape with the updated firmware image, you can update the tape drive’s pcba-resident firmware. Caution...

  • Page 382

    Appendix c: updating the firmware c-2 quantum dlt 8000 tape system note on un*x systems, use the ftp utility to transfer the binary firmware image. Be sure to specify “type image” before using the “get” or “put” commands, otherwise extra characters may be added to the file, causing it to be invalid....

  • Page 383

    Appendix c: updating the firmware quantum dlt 8000 tape system c-3 note if the write protected indicator does not blink, check that: 1. Post passed 2. The drive is unloaded. 3. The drive handle is in its down position. C. Release the unload button, then press the unload button again within four (4) ...

  • Page 384

    Appendix c: updating the firmware c-4 quantum dlt 8000 tape system when the drive code update is complete, the drive resets, and runs its power-on self test (post). The process waits until the tape is reloaded at the beginning of tape (bot). If the firmware image is valid, the tape drive’s pcba cont...

  • Page 385

    Appendix c: updating the firmware quantum dlt 8000 tape system c-5 table c—2 results of firmware update (continued) if... Then... 1. The tape is not a valid firmware update tape 2. The tape does not contain a valid firmware image no firmware update is attempted. The write protected and tape in use i...

  • Page 386

    Appendix c: updating the firmware c-6 quantum dlt 8000 tape system.

  • Page 387: Appendix D

    Quantum dlt 8000 tape system d-1 appendix d running the basic health check (bhc) test via the library port this appendix explains how to run the dlt 8000 tape system’s bhc test on a tape drive that is configured as a component within a library. Note the bhc feature is provided for use only by a trai...

  • Page 388

    Appendix d: running the basic health check (bhc) test via the library port d-2 quantum dlt 8000 tape system.

  • Page 389: Appendix E

    Quantum dlt 8000 tape system e-1 appendix e visual inspection procedure for dlttape cartridges this appendix explains how to visually inspect a dlttape cartridge. Damaged cartridges must not be used. Dlttape cartridge general handling guidelines • always keep each tape cartridge in its protective pl...

  • Page 390

    Appendix e: visual inspection procedure for dlttape cartridges e-2 quantum dlt 8000 tape system • do not insert any cartridge that has been dropped into the dlttape drive without at least a thorough visual inspection as described in this paper. A dropped cartridge may have dislodged, loosened, or da...

  • Page 391

    Appendix e: visual inspection procedure for dlttape cartridges quantum dlt 8000 tape system e-3 inside and near the center of this opening, you should see a small plastic tab. This is one of the reel locks. The reel locks can break if the cartridge is dropped. This may be the cause of any rattling s...

  • Page 392

    Appendix e: visual inspection procedure for dlttape cartridges e-4 quantum dlt 8000 tape system figure e-2 location of reel lock opening and spring-loaded hub on bottom of dlttape cartridge check the opening indicated in figure e-2 and ensure that the small plastic tab is partially visible. This is ...

  • Page 393

    Appendix e: visual inspection procedure for dlttape cartridges quantum dlt 8000 tape system e-5 6. Ensure that the tape leader within the tape cartridge is in the correct position. To do this, you must open the tape cartridge door. Refer to figure e-3. Figure e-3 opening the door on a dlttape cartri...

  • Page 394

    Appendix e: visual inspection procedure for dlttape cartridges e-6 quantum dlt 8000 tape system 7. Figure 4 shows three different tape cartridge loop problems. No tape cartridge that exhibits the problems shown in the examples in figure e-4 should be used in a dlt tape system. Figure e-4 three examp...

  • Page 395

    Appendix e: visual inspection procedure for dlttape cartridges quantum dlt 8000 tape system e-7 8. Finally, check for proper operation of the tape cartridge’s write protect switch (figure e-5). This sliding switch, located on the end of the tape cartridge used for the tape label, should snap smartly...

  • Page 396

    Appendix e: visual inspection procedure for dlttape cartridges e-8 quantum dlt 8000 tape system.

  • Page 397: Appendix F

    Quantum dlt 8000 tape system f-1 appendix f timeout specifications for dlt 8000 tape system scsi commands this appendix provides the timeout specifications for the scsi commands supported by the dlt 8000 tape system. Command timeout erase 6 hours (for overwriting the entire tape) inquiry 500 millise...

  • Page 398

    Appendix f: timeout specifications for dlt 8000 tape system scsi commands f-2 quantum dlt 8000 tape system.

  • Page 399: Appendix G

    Quantum dlt 8000 tape system g-1 appendix g dlt 7000 emulation feature this appendix provides information about using the dlt 7000 emulation feature on a dlt 8000 tape drive. It includes information about what the feature is, compares the feature with actual dlt 7000 tape drive capability, and expla...

  • Page 400

    Appendix g: dlt 7000 emulation feature g-2 quantum dlt 8000 tape system enabling and clearing the dlt 7000 emulation feature caution use extreme caution when enabling the dlt 7000 emulation feature: the dlt 7000 emulation mode changes the operation of the tape drive and fundamentally changes the way...

  • Page 401

    Appendix g: dlt 7000 emulation feature quantum dlt 8000 tape system g-3 what you should know about the dlt 7000 emulation feature a dlt 8000 tape system running with dlt 7000 emulation enabled does not “become” a dlt 7000 system, nor does it retain all of the features of a dlt 8000 system. Here are ...

  • Page 402

    Appendix g: dlt 7000 emulation feature g-4 quantum dlt 8000 tape system verifying product family via the scsi bus you can verify a dlttape system’s product family via the scsi bus. The following table describes the information returned by the scsi command inquiry. The contents of the product family ...

  • Page 403

    Appendix g: dlt 7000 emulation feature quantum dlt 8000 tape system g-5 scsi bus differences the table below illustrates the scsi bus differences between a dlt 7000 system, a dlt 8000 system, and a dlt 8000 system with dlt 7000 emulation enabled. Scsi opcodes that exist for a dlt 7000 drive will hav...

  • Page 404

    Appendix g: dlt 7000 emulation feature g-6 quantum dlt 8000 tape system dlt 7000 drive dlt 8000 drive dlt 8000 drive with dlt 7000 emulation enabled mode select command density code field 0x00 default 0x17 2.6 gb 0x18 6.0 gb 0x19 10/15gb 0x1a 20gb 0x1b 35gb 0x41 40gb 0x80 10/15gb no compress 0x81 20...

  • Page 405

    Appendix g: dlt 7000 emulation feature quantum dlt 8000 tape system g-7 dlt 7000 drive dlt 8000 drive dlt 8000 drive with dlt 7000 emulation enabled page c1h • vendor unique dlt 7000 format support dlt 8000 format support dlt 8000 format support (product family 0x09) read position command • long for...

  • Page 406

    Appendix g: dlt 7000 emulation feature g-8 quantum dlt 8000 tape system.

  • Page 408

    81-60118-06 a01 81-60118-06 a01 501 sycamore drive milpitas, ca 95035 (408) 894-4000 www.Quantum.Com november 10, 2003 81-60118-06 a01.