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Quantum DLTtape DLT 8000 Product Manual

Manual is about: Quantum DLT 8000: User Guide

Summary of DLTtape DLT 8000

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    Dlt tm 8000 tape system product manual.

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    ..

  • Page 3: Dlt

    Dlt tm 8000 tape system product manual may 7, 1999 81-60118-02.

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    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 ...

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    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...

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    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 7

    User manual statements for class b equipment (continued).

  • Page 9: Table of Contents

    Quantum dlt 8000 tape system v table of contents page revision history...............................................................................................Xxiii about this manual .........................................................................................Xxvii chapter 1: gener...

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    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 ..................................................................

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    Table of contents quantum dlt 8000 tape system vii 2.8 using the dlt 8000 tape system’s no trouble found (ntf) test feature .....2-45 2.9 troubleshooting ................................................................................................2-47 chapter 3: scsi description 3.1 scsi overview...

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

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    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 erase command (19h)...................................

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    Table of contents x quantum dlt 8000 tape system 5.9.3 disconnect / reconnect page (02h) ......................................... 5-79 5.9.4 control mode page (0ah)............................................................. 5-81 5.9.5 data compression page (0fh) .....................................

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    Table of contents quantum dlt 8000 tape system xi 5.17 release unit command (17h) .............................................................5-149 5.18 request sense command (03h) ..........................................................5-151 5.19 reserve unit command (16h) .........................

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    Table of contents xii quantum dlt 8000 tape system.

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    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) .........................................................

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    Table of contents xiv quantum dlt 8000 tape system figure 5–12 locate command descriptor block — data format ........................ 5-33 figure 5–13 log select command descriptor block — data format ................ 5-35 figure 5–14 log page header format..............................................

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    Table of contents quantum dlt 8000 tape system xv figure 5–38 disconnect / reconnect page — data format .....................................5-79 figure 5–39 control mode page format descriptor — data format ........................5-81 figure 5–40 data compression page format descriptor — data form...

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    Table of contents xvi quantum dlt 8000 tape system figure 5–65 read block limits header — data format................................ 5-141 figure 5–66 read buffer descriptor — data format....................................... 5-142 figure 5–67 read position command descriptor block — data format ....

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    Table of contents quantum dlt 8000 tape system xvii tables table 1 − 1 storage capacity .......................................................................................1-2 table 1 − 2 performance and timing specifications ....................................................1-3 table 1 − 3 phy...

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    Table of contents xviii quantum dlt 8000 tape system table 2–11 indicator activity during post ............................................................. 2-39 table 2–12 possible tape system states following initialization.............................. 2-39 table 2–13 tape system operating modes ...

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    Table of contents quantum dlt 8000 tape system xix table 5–13 subsystem components revision page — field descriptions.................5-28 table 5–14 load unload command descriptor block — field descriptions.....5-30 table 5–15 locate command descriptor block — field descriptions..................5-...

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    Table of contents xx quantum dlt 8000 tape system table 5–37 mode parameter header — field descriptions ...................................... 5-73 table 5–38 mode parameter block descriptor — field descriptions ....................... 5-75 table 5–39 mode select page descriptor — field descriptions...

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    Table of contents quantum dlt 8000 tape system xxi table 5–66 read position data — field descriptions .....................................5-145 table 5–67 receive diagnostic results command data — field descriptions ......................................................................................

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    Table of contents xxii quantum dlt 8000 tape system.

  • Page 27: About This Manual

    Quantum dlt 8000 tape system xxvii 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...

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    About this manual quantum dlt 8000 tape system xxviii 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...

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    About this manual quantum dlt 8000 tape system xxix.

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    About this manual quantum dlt 8000 tape system xxx conventions this manual uses the following conventions to designate specific elements: element convention example commands uppercase (unless case-sensitive) format unit messages uppercase invalid product number hexadecimal notation number followed b...

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    About this manual quantum dlt 8000 tape system xxxi.

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    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...

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    General description and specifications 1-2 quantum dlt 8000 tape system 1.3 specifications this section of chapter 1 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 ca...

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    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 rate, user native transfer ...

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    General description and specifications 1-4 quantum dlt 8000 tape system table 1 −2 performance and timing specifications (continued) item specification maximum rewind time 120 seconds average access time (from bot) 60 seconds maximum access time (from bot) 120 seconds if the tape directory on the ta...

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    General description and specifications quantum dlt 8000 tape system 1-5 1.3.5 physical specifications table 1 − 3 provides the key physical specifications for the integratible and tabletop versions of the tape system. Table 1 −3 physical dimensions description integratible version tabletop version h...

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    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 ...

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    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...

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    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...

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    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; ...

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    General description and specifications 1-10 quantum dlt 8000 tape system 1.3.9 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 inter...

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    General description and specifications quantum dlt 8000 tape system 1-11 1.3.11 power requirements table 1 − 9 provides the applicable power requirements for both versions of the tape system. Note that the tabletop version requires ac power. Table 1 −9 power requirements description integratible ver...

  • Page 43

    General description and specifications 1-12 quantum dlt 8000 tape system 1.3.12 current requirements table 1-10 presents the current requirements for the tape system in a variety of operating conditions. These numbers may vary with workload. Table 1 −10 current requirements drive operating in write ...

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    General description and specifications quantum dlt 8000 tape system 1-13 1.3.13 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. 1.3.14 dlttape recording media specifications table 1 − 11 provides specificat...

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    General description and specifications 1-14 quantum dlt 8000 tape system table 1 −11 dlttape media specifications (continued) dlttape media type specifications dlttape iv width: 0.5 in., metal particle length: 1800 feet cartridge dimensions: 4.1 in x 4.1 in x 1.0 in shelf life: 30 years min. @ 20 ° ...

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    General description and specifications quantum dlt 8000 tape system 1-15 1.3.15 electromagnetic interference (emi) susceptibility this section presents tables that provide the specifications for conducted emissions, radiated emissions, magnetic radiated susceptibility, radiated susceptibility, condu...

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    General description and specifications 1-16 quantum dlt 8000 tape system table 1 −14 radiated emissions note table 1-14 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...

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    General description and specifications quantum dlt 8000 tape system 1-17 table 1 −17 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...

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

  • Page 50: Tape System

    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...

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    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 52

    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...

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    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 ...

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    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 55

    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 must supply terminator power (term pwr). Quantum recommends that every device along the entire scsi bus be configur...

  • Page 56

    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 57

    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...

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

  • Page 59

    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 60

    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...

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    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 62

    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 63

    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 64

    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 65

    Configuring, installing, and operating the tape system 2-16 quantum dlt 8000 tape system 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 66

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-17 2.3.2 connecting the scsi bus cables figure 2-8 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 67

    Configuring, installing, and operating the tape system 2-18 quantum dlt 8000 tape system 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 se...

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    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-19 115 v 220 / 240 v figure 2–9 ac power cord plug ends.

  • Page 69

    Configuring, installing, and operating the tape system 2-20 quantum dlt 8000 tape system figure 2-10 shows the location of the ac power cord connector on the tabletop tape system’s rear panel. (tabletop version) ac power cord connector.

  • Page 70

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-21 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 greyish brown 1200 dlttape iiixt white 1800 dlttape iv black 1800 this...

  • Page 71

    Configuring, installing, and operating the tape system 2-22 quantum dlt 8000 tape system 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 c...

  • Page 72

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-23 • 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 ha...

  • Page 73

    Configuring, installing, and operating the tape system 2-24 quantum dlt 8000 tape system 2.4.2 tape cartridge write-protect switch figure 2-11 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 insertin...

  • Page 74

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-25 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 syst...

  • Page 75

    Configuring, installing, and operating the tape system 2-26 quantum dlt 8000 tape system 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 f for a detailed visual mechanical inspection procedure and other d...

  • Page 76

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-27 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 syste...

  • Page 77

    Configuring, installing, and operating the tape system 2-28 quantum dlt 8000 tape system 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 t...

  • Page 78

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-29 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 sys...

  • Page 79

    Configuring, installing, and operating the tape system 2-30 quantum dlt 8000 tape system 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 ...

  • Page 80

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-31 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 syst...

  • Page 81

    Configuring, installing, and operating the tape system 2-32 quantum dlt 8000 tape system.

  • Page 82

    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 83

    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 84

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-35 2.5.3 selecting density caution if a prerecorded tape is reused and a write from the beginning of tape (bot) executes (no append write), any data already recorded on the tape will be lost. This includes density c...

  • Page 85

    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 compete, the tape in use indi...

  • Page 86

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

  • Page 87

    Configuring, installing, and operating the tape system 2-38 quantum dlt 8000 tape system.

  • Page 88

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-39 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 indi...

  • Page 89

    Configuring, installing, and operating the tape system 2-40 quantum dlt 8000 tape system 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 indicat...

  • Page 90

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-41 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 91

    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 92

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-43 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 rewinding th...

  • Page 93

    Configuring, installing, and operating the tape system 2-44 quantum dlt 8000 tape system.

  • Page 94

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-45 2.8 using the dlt 8000 tape system’s basic health check (bhc) test feature the bhc test uses the tape system’s firmware to check the various eerom-based information packets for log entries of events that have occ...

  • Page 95

    Configuring, installing, and operating the tape system 2-46 quantum dlt 8000 tape system.

  • Page 96

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-47 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 97

    Configuring, installing, and operating the tape system 2-48 quantum dlt 8000 tape system table 2–15 troubleshooting chart (continued) 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 scsi standard for the s...

  • Page 98

    Configuring, installing, and operating the tape drive quantum dlt 8000 tape system 2-49 table 2–15 troubleshooting chart (continued) indicators along right-hand side of front panel are blinking and the operate handle light is illuminated steadily the tape leader may be dropped. Open the handle and l...

  • Page 99

    Configuring, installing, and operating the tape system 2-50 quantum dlt 8000 tape system.

  • Page 100: Scsi Description

    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 101

    Scsi description 3-2 quantum dlt 8000 tape system.

  • Page 102

    Scsi description quantum dlt 8000 tape system 3-3 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 103

    Scsi description 3-4 quantum dlt 8000 tape system 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 104

    Scsi description quantum dlt 8000 tape system 3-5 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 105

    Scsi description 3-6 quantum dlt 8000 tape system.

  • Page 106

    Scsi description quantum dlt 8000 tape system 3-7 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 107

    Scsi description 3-8 quantum dlt 8000 tape system.

  • Page 108

    Scsi description quantum dlt 8000 tape system 3-9 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 109

    Scsi description 3-10 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 110

    Scsi description quantum dlt 8000 tape system 3-11 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 1...

  • Page 111

    Scsi description 3-12 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 112

    Scsi description quantum dlt 8000 tape system 3-13 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 113

    Scsi description 3-14 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 114

    Scsi description quantum dlt 8000 tape system 3-15 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 115

    Scsi description 3-16 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 116

    Scsi description quantum dlt 8000 tape system 3-17 the drive does not respond to a selection if bad parity is detected. Also, if more than two scsi id bits are on the data bus, the drive does not respond to selection. Note that the initiator will release the sel signal and may change the data bus no...

  • Page 117

    Scsi description 3-18 quantum dlt 8000 tape system 3. Asserts the i/o signal. 4. Sets the data bus to the logical or of its scsi id bit and the initiator’s scsi id bit..

  • Page 118

    Scsi description quantum dlt 8000 tape system 3-19 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 119

    Scsi description 3-20 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 120

    Scsi description quantum dlt 8000 tape system 3-21 notes (continued) 7. The tape drive does not act as an initiator on the scsi bus. Therefore, the drive does not 1) generated unsolicited interrupts to the bus, 2) initiate its own scsi commands, and 3) assert bus reset. 8. A mini-library subsystem i...

  • Page 121

    Scsi description 3-22 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 122

    Scsi description quantum dlt 8000 tape system 3-23 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 123

    Scsi description 3-24 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 124

    Scsi description quantum dlt 8000 tape system 3-25 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 125

    Scsi description 3-26 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 126

    Scsi description quantum dlt 8000 tape system 3-27 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 127

    Scsi description 3-28 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 128

    Scsi description quantum dlt 8000 tape system 3-29 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 129

    Scsi description 3-30 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 130

    Scsi description quantum dlt 8000 tape system 3-31.

  • 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

    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 (01h) 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 3 transfer width...

  • 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: Scsi Commands

    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 category verify 13h 5.24 write 0ah 5.25 write buffer 3bh 5.26 write filemarks 10h 5.27 notes 1. Relative addressing is not supported by the tape drive. Therefore, in all i/o commands, ...

  • 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 initia...

  • 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 t...

  • 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. Refer...

  • 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) space 0 --- --- test unit ready 0 --- --- verify transfer data --- write transfer data --- write buffer parameter list microcode image da...

  • 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 system 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 impedence. • the d...

  • 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

    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

    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. Any write data currently held in buffer memory and not yet written to tape is written to tape before the erase command is executed. Note erase command must be issued...

  • 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

    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 evpd enable vital product data. If 0, the drive returns the standard inquiry data page. If 1, the drive returns the vital product data p...

  • 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 5–9 contains field descriptions for the data returned by the drive. Table 5–9 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 5–9 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 software 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 5–10 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 ...

  • Page 168

    Scsi commands 5-24 quantum dlt 8000 tape system inquiry command (12h) (continued) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 page code (00h) 2 reserved 3 page length (4 or more bytes) 4 00h - (this page) 5 80h - unit serial number page 6 c0h - firmware build information...

  • 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 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 171

    Scsi commands quantum dlt 8000 tape system 5-27 inquiry command (12h) (continued) the subsystem components revision page (c1h) bit byte 7 6 5 4 3 2 1 0 0 peripheral qualifier peripheral device type 1 page code (c1h) 2 reserved 3 page length (14h) 4 product family (8) released firmware 5 firmware maj...

  • Page 172

    Scsi commands 5-28 quantum dlt 8000 tape system inquiry command (12h) (continued) table 5–13 subsystem components revision 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...

  • Page 173

    Scsi commands quantum dlt 8000 tape system 5-29 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 174

    Scsi commands 5-30 quantum dlt 8000 tape system 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 5–11 load unload command descriptor block — d...

  • Page 175

    Scsi commands quantum dlt 8000 tape system 5-31 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 176

    Scsi commands 5-32 quantum dlt 8000 tape system.

  • Page 177

    Scsi commands quantum dlt 8000 tape system 5-33 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 178

    Scsi commands 5-34 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 179

    Scsi commands quantum dlt 8000 tape system 5-35 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 180

    Scsi commands 5-36 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 181

    Scsi commands quantum dlt 8000 tape system 5-37 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 182

    Scsi commands 5-38 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 183

    Scsi commands quantum dlt 8000 tape system 5-39 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 5–15 log parameters format table 5–18 log parameters f...

  • Page 184

    Scsi commands 5-40 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 185

    Scsi commands quantum dlt 8000 tape system 5-41 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 186

    Scsi commands 5-42 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 187

    Scsi commands quantum dlt 8000 tape system 5-43 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 188

    Scsi commands 5-44 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 musts be set to 0. A ppc of 0 indicates that the parameter data requested from the dev...

  • Page 189

    Scsi commands quantum dlt 8000 tape system 5-45 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 190

    Scsi commands 5-46 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 191

    Scsi commands quantum dlt 8000 tape system 5-47 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 192

    Scsi commands 5-48 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 193

    Scsi commands quantum dlt 8000 tape system 5-49 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 5–19 log parameters format for read / write error log ...

  • Page 194

    Scsi commands 5-50 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 195

    Scsi commands quantum dlt 8000 tape system 5-51 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 196

    Scsi commands 5-52 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 197

    Scsi commands quantum dlt 8000 tape system 5-53 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 5–21 log parameters format for last n erro...

  • Page 198

    Scsi commands 5-54 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 199

    Scsi commands quantum dlt 8000 tape system 5-55 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 200

    Scsi commands 5-56 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 201

    Scsi commands quantum dlt 8000 tape system 5-57 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 202

    Scsi commands 5-58 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 203

    Scsi commands quantum dlt 8000 tape system 5-59 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 5–25 log parameters format f...

  • Page 204

    Scsi commands 5-60 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 5–26 log parameters format for rea...

  • Page 205

    Scsi commands quantum dlt 8000 tape system 5-61 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 206

    Scsi commands 5-62 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 207

    Scsi commands quantum dlt 8000 tape system 5-63 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 208

    Scsi commands 5-64 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 209

    Scsi commands quantum dlt 8000 tape system 5-65 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 5-29 and 5-30 and table 5-32 describe the following header log parameter formats for the log sense device ...

  • Page 210

    Scsi commands 5-66 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 parameter code 1 reserved 2 du ds tsd etc tmc rsv’d lp 3 parameter length (04h) 4 - 7 (msb) parameter value (lsb) figure 5–30 log parameters format f...

  • Page 211

    Scsi commands quantum dlt 8000 tape system 5-67 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 212

    Scsi commands 5-68 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 clnq set to 1 if a cleaning request condition exists. When the condition clears, th...

  • Page 213

    Scsi commands quantum dlt 8000 tape system 5-69 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 214

    Scsi commands 5-70 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 (00...

  • Page 215

    Scsi commands quantum dlt 8000 tape system 5-71 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 216

    Scsi commands 5-72 quantum dlt 8000 tape system mode select command (6) / (10) (15h) / (55h) (continued) table 5–36 mode select mode parameter list — field descriptions field name description mode parameter header 4 bytes in length, contains information about the remainder of the parameter list and ...

  • Page 217

    Scsi commands quantum dlt 8000 tape system 5-73 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 218

    Scsi commands 5-74 quantum dlt 8000 tape system 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 219

    Scsi commands quantum dlt 8000 tape system 5-75 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 220

    Scsi commands 5-76 quantum dlt 8000 tape system 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 221

    Scsi commands quantum dlt 8000 tape system 5-77 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 222

    Scsi commands 5-78 quantum dlt 8000 tape system 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 223

    Scsi commands quantum dlt 8000 tape system 5-79 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 224

    Scsi commands 5-80 quantum dlt 8000 tape system 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 225

    Scsi commands quantum dlt 8000 tape system 5-81 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 226

    Scsi commands 5-82 quantum dlt 8000 tape system 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 227

    Scsi commands quantum dlt 8000 tape system 5-83 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 228

    Scsi commands 5-84 quantum dlt 8000 tape system 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 229

    Scsi commands quantum dlt 8000 tape system 5-85 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 230

    Scsi commands 5-86 quantum dlt 8000 tape system 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 231

    Scsi commands quantum dlt 8000 tape system 5-87 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 232

    Scsi commands 5-88 quantum dlt 8000 tape system 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 add...

  • Page 233

    Scsi commands quantum dlt 8000 tape system 5-89 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 234

    Scsi commands 5-90 quantum dlt 8000 tape system 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 the ...

  • Page 235

    Scsi commands quantum dlt 8000 tape system 5-91 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 236

    Scsi commands 5-92 quantum dlt 8000 tape system 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 237

    Scsi commands quantum dlt 8000 tape system 5-93 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 238

    Scsi commands 5-94 quantum dlt 8000 tape system 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 239

    Scsi commands quantum dlt 8000 tape system 5-95 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 240

    Scsi commands 5-96 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 forcereadsili ascii binary 0 1 to make variable read command handled as if the sili bit is...

  • 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 (continued) name value rep. Default length (bytes) usage scsibusdmatimer ascii decimal 2 1 the number of seconds until the drive times out waiting ...

  • 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 thirdpartyden ascii decimal 0 1 value of default third party density. Requires enathirdpar...

  • Page 243

    Scsi commands quantum dlt 8000 tape system 5-99 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 244

    Scsi commands 5-100 quantum dlt 8000 tape system 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 245

    Scsi commands quantum dlt 8000 tape system 5-101 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 246

    Scsi commands 5-102 quantum dlt 8000 tape system 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 247

    Scsi commands quantum dlt 8000 tape system 5-103 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 248

    Scsi commands 5-104 quantum dlt 8000 tape system 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 249

    Scsi commands quantum dlt 8000 tape system 5-105 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 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 - 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 5–50 mode sense ...

  • Page 251

    Scsi commands quantum dlt 8000 tape system 5-107 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 252

    Scsi commands 5-108 quantum dlt 8000 tape system 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 253

    Scsi commands quantum dlt 8000 tape system 5-109 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 254

    Scsi commands 5-110 quantum dlt 8000 tape system (continued).

  • Page 255

    Scsi commands quantum dlt 8000 tape system 5-111 mode sense (6) / (10) command (1ah / 5ah) (continued) table 5–51 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 256

    Scsi commands 5-112 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 257

    Scsi commands quantum dlt 8000 tape system 5-113 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 258

    Scsi commands 5-114 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 259

    Scsi commands quantum dlt 8000 tape system 5-115 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 260

    Scsi commands 5-116 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 261

    Scsi commands quantum dlt 8000 tape system 5-117 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 262

    Scsi commands 5-118 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 263

    Scsi commands quantum dlt 8000 tape system 5-119 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 264

    Scsi commands 5-120 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 265

    Scsi commands quantum dlt 8000 tape system 5-121 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 266

    Scsi commands 5-122 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 267

    Scsi commands quantum dlt 8000 tape system 5-123 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 268

    Scsi commands 5-124 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 269

    Scsi commands quantum dlt 8000 tape system 5-125 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 270

    Scsi commands 5-126 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 271

    Scsi commands quantum dlt 8000 tape system 5-127 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 272

    Scsi commands 5-128 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 273

    Scsi commands quantum dlt 8000 tape system 5-129 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 274

    Scsi commands 5-130 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 setable via the mode select’s eeprom vendor unique page are returned....

  • Page 275

    Scsi commands quantum dlt 8000 tape system 5-131 5.11 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 reserved 3 reserved 4 reserved prevent 5 unused re...

  • Page 276

    Scsi commands 5-132 quantum dlt 8000 tape system.

  • Page 277

    Scsi commands quantum dlt 8000 tape system 5-133 5.12 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 278

    Scsi commands 5-134 quantum dlt 8000 tape system read command (08h) (continued) table 5–61 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 279

    Scsi commands quantum dlt 8000 tape system 5-135 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 280

    Scsi commands 5-136 quantum dlt 8000 tape system.

  • Page 281

    Scsi commands quantum dlt 8000 tape system 5-137 5.13 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 reserved 3 reserved 4 reserved 5 unused reser...

  • Page 282

    Scsi commands 5-138 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 283

    Scsi commands quantum dlt 8000 tape system 5-139 5.14 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 284

    Scsi commands 5-140 quantum dlt 8000 tape system read buffer command (3ch) (continued) table 5–63 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 285

    Scsi commands quantum dlt 8000 tape system 5-141 read buffer command (3ch) (continued) 5.14.1 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 286

    Scsi commands 5-142 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 5–66 read buffer descriptor — data format.

  • Page 287

    Scsi commands quantum dlt 8000 tape system 5-143 5.15 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 288

    Scsi commands 5-144 quantum dlt 8000 tape system read position command (34h) (continued) read position data format data from read position takes the following format: bit byte 7 6 5 4 3 2 1 0 0 bop eop reserved bpu (0) reserved 1 partition number 2 - 3 reserved 4 - 7 (msb) first block location (lsb)...

  • Page 289

    Scsi commands quantum dlt 8000 tape system 5-145 read position command (34h) (continued) table 5–66 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 290

    Scsi commands 5-146 quantum dlt 8000 tape system.

  • Page 291

    Scsi commands quantum dlt 8000 tape system 5-147 5.16 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 292

    Scsi commands 5-148 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 293

    Scsi commands quantum dlt 8000 tape system 5-149 5.17 release unit command (17h) the release unit command 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 requesting initiator. If the tape ...

  • Page 294

    Scsi commands 5-150 quantum dlt 8000 tape system release unit command (17h) (continued) table 5–68 release unit 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 reserved u...

  • Page 295

    Scsi commands quantum dlt 8000 tape system 5-151 5.18 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 296

    Scsi commands 5-152 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 297

    Scsi commands quantum dlt 8000 tape system 5-153 request sense command (03h) (continued) bit byte 7 6 5 4 3 2 1 0 0 valid error code 1 segment number (0) 2 filemar k eom ili reserve d sense key 3 - 6 (msb) information bytes (lsb) 7 additional sense length 8 - 11 (msb) command-specific information by...

  • Page 298

    Scsi commands 5-154 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–70 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 299

    Scsi commands quantum dlt 8000 tape system 5-155 request sense command (03h) (continued) table 5–70 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 300

    Scsi commands 5-156 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–70 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 301

    Scsi commands quantum dlt 8000 tape system 5-157 request sense command (03h) (continued) table 5–71 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 302

    Scsi commands 5-158 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 303

    Scsi commands quantum dlt 8000 tape system 5-159 request sense command (03h) (continued) table 5–72 supported additional sense code / additional sense code qualifiers (continued) asc ascq description 15h 01h mechanical position error 02h detected by read of media 1ah 00h parameter list length error ...

  • Page 304

    Scsi commands 5-160 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–72 supported additional sense code / additional sense code qualifiers (continued) asc ascq description 26h parameter list error 00h invalid field 01h parameter not supported 02h parameter value invalid 2...

  • Page 305

    Scsi commands quantum dlt 8000 tape system 5-161 request sense command (03h) (continued) table 5–72 supported additional sense code / additional sense code qualifiers (continued) asc ascq description 3bh 00h sequential positioning error 08h reposition error 0dh* media destination element full 0eh* m...

  • Page 306

    Scsi commands 5-162 quantum dlt 8000 tape system request sense command (03h) (continued) table 5–72 supported additional sense code / additional sense code qualifiers (continued) asc ascq description 45h 00h select/reselect failure 47h 00h scsi parity error (check scsi bus configuration and connecti...

  • Page 307

    Scsi commands quantum dlt 8000 tape system 5-163 request sense command (03h) (continued) table 5–72 supported additional sense code / additional sense code qualifiers (continued) asc ascq description 83h 00h a read/write data transfer was aborted due to a bus parity error or unexpected atn 84h 01h t...

  • Page 308

    Scsi commands 5-164 quantum dlt 8000 tape system.

  • Page 309

    Scsi commands quantum dlt 8000 tape system 5-165 5.19 reserve unit command (16h) the reserve unit command 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 (16h) 1 logical unit number 3rdpty...

  • Page 310

    Scsi commands 5-166 quantum dlt 8000 tape system reserve unit command (16h) (continued) table 5–73 reserve unit command data — field descriptions field name description 3rdpty the third party reservation option for reserve unit allows an initiator to reserve a logical unit for another scsi device. T...

  • Page 311

    Scsi commands quantum dlt 8000 tape system 5-167 reserve unit 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 command to the tape drive. Medium changer considerations for reserv...

  • Page 312

    Scsi commands 5-168 quantum dlt 8000 tape system.

  • Page 313

    Scsi commands quantum dlt 8000 tape system 5-169 5.20 rewind command (01h) the rewind command directs the tape drive to position the tape at the beginning of the currently active partition (for dlt drives, this is bom). Before rewinding, the tape drive writes any write data that is in the buffer to ...

  • Page 314

    Scsi commands 5-170 quantum dlt 8000 tape system.

  • Page 315

    Scsi commands quantum dlt 8000 tape system 5-171 5.21 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. Bit byte 7 6 5 4 3 2 1 0 0 operation code (1dh) 1 ...

  • Page 316

    Scsi commands 5-172 quantum dlt 8000 tape system 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 317

    Scsi commands quantum dlt 8000 tape system 5-173 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 5–76 send diagnostic cdb bits selftst, devofl, a...

  • Page 318

    Scsi commands 5-174 quantum dlt 8000 tape system send diagnostic command (1dh) (continued) table 5–77 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 319

    Scsi commands quantum dlt 8000 tape system 5-175 send diagnostic command (1dh) (continued) table 5–77 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 320

    Scsi commands 5-176 quantum dlt 8000 tape system 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 5–78 sense keys used for send diag...

  • Page 321

    Scsi commands quantum dlt 8000 tape system 5-177 5.22 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 322

    Scsi commands 5-178 quantum dlt 8000 tape system space command (11h) (continued) table 5–80 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 323

    Scsi commands quantum dlt 8000 tape system 5-179 5.23 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 324

    Scsi commands 5-180 quantum dlt 8000 tape system.

  • Page 325

    Scsi commands quantum dlt 8000 tape system 5-181 5.24 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 326

    Scsi commands 5-182 quantum dlt 8000 tape system.

  • Page 327

    Scsi commands quantum dlt 8000 tape system 5-183 5.25 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 328

    Scsi commands 5-184 quantum dlt 8000 tape system write command (0ah) (continued) table 5–82 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 transfer...

  • Page 329

    Scsi commands quantum dlt 8000 tape system 5-185 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 330

    Scsi commands 5-186 quantum dlt 8000 tape system.

  • Page 331

    Scsi commands quantum dlt 8000 tape system 5-187 5.26 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 332

    Scsi commands 5-188 quantum dlt 8000 tape system write buffer command (3bh) (continued) table 5–83 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 field...

  • Page 333

    Scsi commands quantum dlt 8000 tape system 5-189 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 334

    Scsi commands 5-190 quantum dlt 8000 tape system.

  • Page 335

    Scsi commands quantum dlt 8000 tape system 5-191 5.27 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 336

    Scsi commands 5-192 quantum dlt 8000 tape system write filemarks command (10h) (continued) table 5–84 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 tap...

  • Page 337: Information

    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 338

    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 339

    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 340

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

  • Page 341: Sense Key Information

    Quantum dlt 8000 tape system b-1 appendix b sense key information this appendix provides a list of tape drive additional sense codes, additional sense code qualifiers, and their meanings. Table b–1 supported additional sense codes and additional sense code qualifiers (in hex) sense key sense code se...

  • Page 342

    Appendix b: sense key information b-2 quantum dlt 8000 tape system table b–1 supported additional sense codes and additional sense code qualifiers (in hex) (continued) sense key sense code sense code qualifier meaning 02h not ready 04 00 unit not ready, cause nonreportable 04 01 unit not ready, cali...

  • Page 343

    Appendix b: sense key information quantum dlt 8000 tape system b-3 table b–1 supported additional sense codes and additional sense code qualifiers (in hex) (continued) sense key sense code sense code qualifier meaning 04h hardware error 08 00 lun communication failure 08 01 lun communication timeout...

  • Page 344

    Appendix b: sense key information b-4 quantum dlt 8000 tape system table b–1 supported additional sense codes and additional sense code qualifiers (in hex) (continued) sense key sense code sense code qualifier meaning 04h hardware error (cont.) 51 00 erase failure 53 00 media load/eject failure 53 0...

  • Page 345

    Appendix b: sense key information quantum dlt 8000 tape system b-5 table b–1 supported additional sense codes and additional sense code qualifiers (in hex) (continued) sense key sense code sense code qualifier meaning 05h illegal request (cont.) 3b 0d media destination element full 3b 0e media sourc...

  • Page 346

    Appendix b: sense key information b-6 quantum dlt 8000 tape system table b–1 supported additional sense codes and additional sense code qualifiers (in hex) (continued) sense key sense code sense code qualifier meaning 0bh command aborted 43 00 message error 44 80 unexpected selection interrupt 44 82...

  • Page 347

    Appendix b: sense key information quantum dlt 8000 tape system b-7 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 scsi-2 request sense command (refer to chapter 5 information d...

  • Page 348

    Appendix b: sense key information b-8 quantum dlt 8000 tape system.

  • Page 349

    Quantum dlt 8000 tape system c-1 appendix c eeprom-resident bugcheck and event logs this appendix provides a 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 co...

  • Page 350

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

  • Page 351

    Appendix c: eeprom-resident bugcheck and event logs quantum dlt 8000 tape system c-3 c.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 352

    Appendix c: eeprom-resident bugcheck and event logs c-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 c—3 provides the description of important fields within the p...

  • Page 353: Updating The Firmware

    Quantum dlt 8000 tape system d-1 appendix d updating the firmware this chapter explains how to update the tape system’s pcba-resident firmware. D.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 354

    Appendix d: updating the firmware d-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 355

    Appendix d: updating the firmware quantum dlt 8000 tape system d-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 356

    Appendix d: updating the firmware d-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 con...

  • Page 357

    Appendix d: updating the firmware quantum dlt 8000 tape system d-5 table d—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...

  • Page 358

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

  • Page 359: The Library Port

    Quantum dlt 8000 tape system e-1 appendix e 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. Issue the run bhc test command (15h) to the tape drive ...

  • Page 360

    Appendix e: running the no trouble found test via the library port e-2 quantum dlt 8000 tape system.

  • Page 361: Cartridges

    Quantum dlt 8000 tape system f-1 appendix f 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 362

    Appendix f: visual inspection procedure for dlttape cartridges f-2 quantum dlt 8000 tape system • do not expose the tape cartridge to moisture or direct sunlight. • do not insert any cartridge that has been dropped into the dlttape drive without at least a thorough visual inspection as described in ...

  • Page 363

    Appendix f: visual inspection procedure for dlttape cartridges quantum dlt 8000 tape system f-3 shown in figure f-1. You will see that there is a small opening on the left-hand side of the tape cartridge. Inside and near the center of this opening, you should see a small plastic tab. This is one of ...

  • Page 364

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

  • Page 365

    Appendix f: visual inspection procedure for dlttape cartridges quantum dlt 8000 tape system f-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 3. Figure f-3 opening the door on a dlttape cartridg...

  • Page 366

    Appendix f: visual inspection procedure for dlttape cartridges f-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 f-4 should be used in a dlt tape system. Figure f-4 three examp...

  • Page 367

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

  • Page 368

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

  • Page 369: Index

    Quantum dlt 8000 tape system index-1 index a ac power cord, 2-18 acoustic noise emissions, 1-10 altitude environmental specifications, 2-6 attention signal responses, 3-17 b basic health check, 2-45, 5-171, e-1 bhc, 2-45, 5-171, e-1 bugcheck packets, c-1 bus free, 3-13 bus parity errors, 3-14 bus te...

  • Page 370

    Index index-2 quantum dlt 8000 tape system drive reliability, 1-4 e eeprom packets (last n error events), c-1 eeprom resident bugcheck and event logs, c-1 electromagnetic emissions, 1-9 erase, 5-15 event log packets, c-1 f firmware update, d-1 firmware update tape, creating, d-1 front panel controls...

  • Page 371

    Index quantum dlt 8000 tape system index-3 s send diagnostic, 5-171 space, 5-171 status phase, 3-25 storage ranges environmental specifications, 1-6 t tapealert page, 5-54 temperature environmental specifications, 1- 6, 1-7 test unit ready, 5-179 troubleshooting, 2-47 u unload button, 2-29, 2-34 unl...

  • Page 372

    Index index-4 quantum dlt 8000 tape system.

  • Page 374

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