Quantum Tape Drive LTO-3 User Manual

Manual is about: Quantum LTO 3: User Guide

Summary of Tape Drive LTO-3

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    Quantum lto-3 tape drive user’s guide, p/n 50002764, b01, july 2005 made in usa. Quantum corporation provides this publication “as is” without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. ...

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    Lto-3 tape drive user’s guide iii contents preface xi chapter 1 overview, unpacking instructions and quick start 1 overview............................................................................................................. 1 drive configurations................................................

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    Contents iv lto-3 tape drive user’s guide connecting a scsi cable..........................................................................14 checking the scsi termination ..............................................................15 connecting a serial cable for tape libraries......................

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    Contents lto-3 tape drive user’s guide v data compression............................................................................................ 35 data compression considerations......................................................... 36 intelligent data compression .............................

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    Contents vi lto-3 tape drive user’s guide finding existing scsi controllers and devices ...................................59 configuring the lto-3 tape drive with mkdev..................................60 configuring for linux............................................................................

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    Lto-3 tape drive user’s guide vii figures figure 1 typical internal and desktop configurations ......................... 2 figure 2 internal lto-3 tape drive jumper settings............................. 9 figure 3 acceptable mounting orientations ......................................... 11 figure 4...

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    Figures viii lto-3 tape drive user’s guide.

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    Lto-3 tape drive user’s guide ix tables table 1 iscsi ids and jumper settings for an internal lto-3 tape drive ..................................................................................... 9 table 2 serial interface connector pin assignments (lto-3) ........... 16 table 3 adt bus connections...

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    Tables x lto-3 tape drive user’s guide.

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    Lto-3 tape drive user’s guide xi preface the lto-3 tape drive is a high-performance 16-channel tape drive that complies with the lto interchange specifications. The drive is suited for mid-range to high-end servers, mainframe systems, and tape library automation systems. Audience this document was w...

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    Preface xii lto-3 tape drive user’s guide document organization this user’s guide describes how to install, configure, and care for the lto-3 desktop and internal tape drives. Please read the appropriate chapters and appendixes carefully, and keep this guide handy for future reference. • chapter 1, ...

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    Preface lto-3 tape drive user’s guide xiii related documents refer to the appropriate product manuals for information about your tape drive and cartridges. Scsi-2 specification 0 the scsi-2 communications specification is the proposed american national standard for information systems, dated march 9...

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    Preface xiv lto-3 tape drive user’s guide technical publications 0 to comment on existing documentation send e-mail to: doc-comments@quantum.Com quantum home page 0 visit the quantum home page at: www.Quantum.Com customer support 0 the quantum customer support department provides a 24-hour help desk...

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    Lto-3 tape drive user’s guide 1 chapter 1 1 overview, unpacking instructions and quick start this chapter provides an overview of this product and a quick start guide. It also discusses unpacking and inspection considerations. Topics covered in this chapter are: • overview • internal tape drive guid...

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    Chapter 1 overview, unpacking instructions and quick start overview 2 lto-3 tape drive user’s guide drive configurations 1 the lto-3 tape drive has a 5¼-inch, full-height form factor, with automatic electromechanical cartridge soft load. The drive is available as an internal and a desktop drive. • i...

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    Chapter 1 overview, unpacking instructions and quick start unpacking and inspection lto-3 tape drive user’s guide 3 • intelligent data compression maximizes performance and capacity by analyzing compressibility prior to recording. • cartridge memory enables fast loading of cartridges and stores pert...

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    Chapter 1 overview, unpacking instructions and quick start quick start guide 4 lto-3 tape drive user’s guide quick start guide 1 use the following quick-start instructions to get your tape drive up and running as quickly as possible. Internal lto-3 tape drive quick start 1 use the following procedur...

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    Chapter 1 overview, unpacking instructions and quick start internal tape drive guidelines and cautions lto-3 tape drive user’s guide 5 desktop lto-3 tape drive quick start 1 use the following procedure to install the desktop lto-3 tape drive. Print the page and check each step as you complete it. If...

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    Chapter 1 overview, unpacking instructions and quick start internal tape drive guidelines and cautions 6 lto-3 tape drive user’s guide • before you remove the drive from the antistatic bag, touch a metal or grounded surface to discharge any static electricity buildup from your body. • always lay the...

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    Lto-3 tape drive user’s guide 7 chapter 2 2 installation this chapter explains how to install the internal and desktop lto-3 tape drives. Topics covered in this chapter are: • installing an internal lto-3 tape drive • installing a desktop lto-3 tape drive drive installation instructions 2 after unpa...

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    Chapter 2 installation installing an internal lto-3 tape drive 8 lto-3 tape drive user’s guide installing an internal lto-3 tape drive 2 installing an internal lto-3 tape drive with an ultra 160 scsi lvd interface involves the following steps: 1 configuring an lvd drive 2 mounting the internal lto-3...

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    Chapter 2 installation installing an internal lto-3 tape drive lto-3 tape drive user’s guide 9 and 7–8 to change the scsi id of the lto-3 tape drive (see table 1 and table 2 ), or assign a unique scsi id to the other scsi device. Figure 2 internal lto-3 tape drive jumper settings table 1 iscsi ids a...

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    Chapter 2 installation installing an internal lto-3 tape drive 10 lto-3 tape drive user’s guide terminator power 2 by default, terminator power is disabled on the internal lto-3 tape drive. To enable terminator power, place a jumper across pins 11 and 12. 2 open shunted open open 3 shunted shunted o...

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    Chapter 2 installation installing an internal lto-3 tape drive lto-3 tape drive user’s guide 11 mounting the internal lto-3 tape drive 2 you can mount the internal lto-3 tape drive either horizontally or vertically, with the drive’s left side facing up (see figure 3 ). If you mount the drive: • vert...

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    Chapter 2 installation installing an internal lto-3 tape drive 12 lto-3 tape drive user’s guide figure 4 internal lto-3 tape drive mounting dimensions connector detail 2 two connectors are specified, a fixed board connector and a free cable connector. Adi fixed board connector 2 the fixed board conn...

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    Chapter 2 installation installing an internal lto-3 tape drive lto-3 tape drive user’s guide 13 connector in a removable medium or automation device is beyond the scope of this standard. Figure 5 adi fixed board connector adi free cable connector 2 the free cable connector is intended to mate with t...

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    Chapter 2 installation installing an internal lto-3 tape drive 14 lto-3 tape drive user’s guide figure 6 adi free cable connector when the adi free cable connector is used on both ends of a cable, like- numbered pins shall be connected together, that is, pin 1 on end a is wired to pin 1 on end b, pi...

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    Chapter 2 installation installing an internal lto-3 tape drive lto-3 tape drive user’s guide 15 figure 7 rear view of the internal lto-3 tape drive checking the scsi termination 2 the internal lto-3 tape drive does not provide scsi termination. You must place a scsi bus terminator or a scsi device w...

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    Chapter 2 installation installing an internal lto-3 tape drive 16 lto-3 tape drive user’s guide figure 8 two scsi termination examples for the internal lto-3 tape drive connecting a serial cable for tape libraries 2 the internal lto-3 tape drive includes an rs-422 serial interface for tape libraries...

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    Chapter 2 installation installing an internal lto-3 tape drive lto-3 tape drive user’s guide 17 bus composition 2 table 3 defines the connections that make up the adt bus. With the exception of sense a and sense d this standard defines the behavior of these connections only when an initiator port as...

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    Chapter 2 installation installing a desktop lto-3 tape drive 18 lto-3 tape drive user’s guide connecting a power cable 2 attach a four-pin power cable to the power connector on the back of the drive. Figure 7 shows the location of the power connector. The recommended 4-pin power connector for intern...

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    Chapter 2 installation installing a desktop lto-3 tape drive lto-3 tape drive user’s guide 19 setting the scsi id 2 each scsi device on the bus must have its own unique scsi id. The desktop tape drive is shipped with a default scsi id of 6. Avoid setting drive id to 7. If another scsi device in the ...

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    Chapter 2 installation installing a desktop lto-3 tape drive 20 lto-3 tape drive user’s guide connection. This means you can use either connector to attach the drive to a host computer or to another scsi device. 1 turn off all power to the drive and the computer. 2 attach the scsi interface cable to...

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    Chapter 2 installation installing a desktop lto-3 tape drive lto-3 tape drive user’s guide 21 connecting a power cord 2 attach the power cord securely to the power connector on the back of the desktop lto-3 tape drive (see figure 9 ). Installing the lto driver 2 if you intend to use your drive with ...

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    Chapter 2 installation installing a desktop lto-3 tape drive 22 lto-3 tape drive user’s guide.

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    Lto-3 tape drive user’s guide 23 chapter 3 3 operation this chapter describes how to operate the lto-3 tape drive. Topics covered in this chapter are: • understanding the front panel display • blink codes • using lto cartridges • drive maintenance • parking the drive for shipping.

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    Chapter 3 operation understanding the front panel display 24 lto-3 tape drive user’s guide understanding the front panel display 3 figure 11 shows a view of the lto-3 front-panel display. Figure 11 generic front panel display the lto-3 tape drive has four leds on the front panel. The led colors and ...

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    Chapter 3 operation blink codes lto-3 tape drive user’s guide 25 blink codes 3 table 4 summarizes the blink codes for the lto-3 tape drive. Table 4 lto-3 tape drive blink codes drive condition activity led (green) error led (orange) status led (amber) cleaning request on hardware error fast position...

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    Chapter 3 operation using lto cartridges 26 lto-3 tape drive user’s guide using lto cartridges 3 loading a cartridge 3 to load an ultrium cartridge into the lto-3 tape drive: • place the cartridge in the slot and gently push until the cartridge is sensed and automatically retracted into the drive. •...

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    Chapter 3 operation using lto cartridges lto-3 tape drive user’s guide 27 write-protecting a cartridge 3 ultrium cartridges have a sliding write-protect switch near the back right corner of the cartridge, see figure 12 . • if you slide the switch to the position farthest from the corner of the cartr...

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    Chapter 3 operation drive maintenance 28 lto-3 tape drive user’s guide cartridge care and maintenance 3 to protect the data on your ultrium data cartridges, observe the following precautions: • always remove the cartridge from the drive when not in use and store it in its protective case. • do not e...

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    Chapter 3 operation drive maintenance lto-3 tape drive user’s guide 29 cleaning the tape drive 3 excessive tape debris or other material may accumulate on the tape heads if the drive is used with non-approved media or operated in a hot, dusty environment. In this case, the drive may experience exces...

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    Chapter 3 operation parking the drive for shipping 30 lto-3 tape drive user’s guide parking the drive for shipping 3 quantum recommends that you “park” the lto-3 tape drive before shipping it or placing it in an environment where they may be subject to physical shock. Parking the drive moves the tap...

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    Lto-3 tape drive user’s guide 31 chapter 4 4 theory this chapter describes operational theories used in the lto-3 tape drive. The topics covered in this chapter are: • track layout • recording method • data buffer • data integrity • data compression track layout 4 with the lto-3 tape drive, there ar...

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    Chapter 4 theory track layout 32 lto-3 tape drive user’s guide a track group is a set of tracks that is recorded concurrently. The sets of 11 data tracks in a data band are data sub bands. There are 16 data sub bands per data band. The data tracks are accessed in a serpentine manner. A wrap is a tra...

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    Chapter 4 theory recording method lto-3 tape drive user’s guide 33 recording method 4 the lto-3 tape drive records data using write-equalized (0,13/11) run length limited (rll) code. Rll (0,13/11) data bits are defined as follows: • one is represented by a flux transition at the center of a bit-cell...

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    Chapter 4 theory data integrity 34 lto-3 tape drive user’s guide error-correction code (ecc) 4 the use of cyclic redundancy checking (crc), two-level orthogonal error correction coding (ecc) provides a very low probability of encountering a hard error. During the read process, ecc correction is perf...

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    Chapter 4 theory data compression lto-3 tape drive user’s guide 35 3 correction : generating corrected data from syndromes. The correction depends on the number and types of errors involved: • for one known c1 codeword pair in error in a sub-data set (c2 codeword), the operation is performed by the ...

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    Chapter 4 theory data compression 36 lto-3 tape drive user’s guide symbols point back to the original data string, using fewer characters to represent the strings. Because these smaller symbols are substituted for the longer strings of data, more data can be stored in the same physical space. Some i...

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    Chapter 4 theory data compression lto-3 tape drive user’s guide 37 the transfer rate depends on factors such as: • compression ratio • drive buffer size • host computer input/output (i/o) speed • effective disc speeds of the host computer • record lengths that the host computer transmits data compre...

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    Chapter 4 theory data compression 38 lto-3 tape drive user’s guide software data compression should never be used because the lto-3 tape drive's built-in intelligent data compression is much more efficient than software data compression systems. The lto-3 tape drive uses a derivative of aldc-2 lossl...

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    Lto-3 tape drive user’s guide 39 chapter 5 5 specifications this chapter provides technical specifications for the lto-3 tape drive. The topics covered in this chapter are: • physical specifications • power specifications • drive performance specifications • environmental requirements • reliability ...

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    Chapter 5 specifications physical specifications 40 lto-3 tape drive user’s guide physical specifications 5 table 5 lists the physical specifications of the lto-3 tape drive. Table 5 physical specifications specification internal scsi drive without bezel internal scsi drive with bezel desktop scsi d...

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    Chapter 5 specifications physical specifications lto-3 tape drive user’s guide 41 figure 14 shows the dimensions of the internal lto-3 tape drive. Figure 14 internal lto-3 tape drive dimensions 84.3 147.8 48.90 ± 0.60 from upper bezel mounting tabs 48.90 ± 0.60 from upper bezel mounting tabs length ...

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    Chapter 5 specifications power specifications 42 lto-3 tape drive user’s guide power specifications 5 the desktop lto-3 tape drive comes with a built-in 90-260vac (47-63 hz) automatic switching power supply. Maximum voltage and power specifications for the internal lto-3 tape drive is listed in the ...

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    Chapter 5 specifications drive performance specifications lto-3 tape drive user’s guide 43 drive performance specifications 5 table 8 lists the performance specifications for the lto-3 tape drive. Table 8 drive performance specifications specification value capacity lto ultrium 3 (680 m) 400 gbytes ...

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    Chapter 5 specifications environmental requirements 44 lto-3 tape drive user’s guide environmental requirements 5 table 9 lists the environmental specifications for the lto-3 tape drive. Table 9 environmental requirements average rewind time (609-m tape) > 51 seconds maximum rewind time (609-m tape)...

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    Chapter 5 specifications reliability lto-3 tape drive user’s guide 45 injected noise 5 the internal drive operates without degradation of error rates with 100 mv of noise injected between the chassis and 0 v at the power connector at any frequency between 45 hz and 20 mhz. Reliability 5 the lto-3 ta...

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    Chapter 5 specifications mean time between failures 46 lto-3 tape drive user’s guide table 10 reliability mean time between failures 5 the mean time between failures (mtbf) for the internal drive is specified at 250,000 hours minimum. This specification includes all power-on and operational time but...

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    Chapter 5 specifications lto cartridge specifications lto-3 tape drive user’s guide 47 mean time to replace 5 the mean time to replace (mttr) is the average time required by a qualified service technician to diagnose a defective drive and to install a replacement drive. The mttr for lto products is ...

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    Chapter 5 specifications regulatory compliance 48 lto-3 tape drive user’s guide cartridge memory 5 each ultrium cartridge has 4 kbytes of nonvolatile memory: 3 kbytes are used to store tape-directory and hardware specific information. 1 kbyte is available for application and oem use. The cartridge m...

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    Chapter 5 specifications regulatory compliance lto-3 tape drive user’s guide 49 * member nations of the iecee include austria, australia, belgium, canada, china (pr), czech republic, denmark, finland, france, germany, hungary, india, ireland, israel, italy, japan, south korea, netherlands, norway, p...

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    Chapter 5 specifications regulatory compliance 50 lto-3 tape drive user’s guide electromagnetic compatibility (emc) 5 country regulatory organization compliant to: united states federal communications commission (fcc) title 47: code of federal regulations, part 15, subpart b, class b: digital device...

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    Chapter 5 specifications disposal of electrical and electronic equipment lto-3 tape drive user’s guide 51 you should also consider the following safety points: • install the drive in an enclosure that limits the user’s access to live parts, gives adequate system stability and provides the necessary ...

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    Chapter 5 specifications disposal of electrical and electronic equipment 52 lto-3 tape drive user’s guide.

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    Lto-3 tape drive user’s guide 53 chapter 6 6 unix settings this chapter describes how to configure various unix systems to recognize and obtain optimal performance from the lto-3 tape drive. The topics covered in this chapter are: • a word about scsi controllers • configuring for the dec/compaq unix...

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    Chapter 6 unix settings a word about scsi controllers 54 lto-3 tape drive user’s guide a word about scsi controllers 6 the lto-3 tape drive transfers data natively at 68 mbytes per second. It supports the scsi ultra 160 specification and can transfer data at burst rates of up to 320 mbytes per secon...

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    Chapter 6 unix settings configuring for the sun environment (solaris 2.4, 2.5, 2.6, 7, 8, and 9) lto-3 tape drive user’s guide 55 density: # densitynumber=1 densitycode=default compressioncode=0x1 buffered=0x1 save the file. Then run the following command: ddr_config-c ddr_config takes the default i...

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    Chapter 6 unix settings configuring for the sun environment (solaris 2.4, 2.5, 2.6, 7, 8, and 9) lto-3 tape drive user’s guide 57 the value 0x1d639 equates to the way that the lto-3 tape drive is configured to operate in the solaris environment. This value enables the lto-3 tape drive to: support va...

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    Chapter 6 unix settings configuring for the ibm aix environment (aix version 4.1.X and later) 58 lto-3 tape drive user’s guide configuring for the ibm aix environment (aix version 4.1.X and later) 6 finding existing scsi controllers and devices 6 enter the following command: lsdev–cs scsi. This show...

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    Chapter 6 unix settings configuring for sco open server 5.0.X lto-3 tape drive user’s guide 59 set reserve/release support to yes . Set block size for variable length support (num.) to 0 . Set density 1 to 0 . 6 leave the set delay. . . And set timeout. . . Lines at the default value. 7 click ok and...

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    Chapter 6 unix settings configuring for sco open server 5.0.X 60 lto-3 tape drive user’s guide this command produces output similar to: %tape type=s ha=0 id=6 lun=0 bus=0 ht=alad the information above shows that an adaptec scsi controller is installed (alad) and a scsi tape drive (type=s) is install...

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    Chapter 6 unix settings configuring for linux lto-3 tape drive user’s guide 61 13 when the process takes you back to the two main menu screens, press q . 14 when asked to create a new kernel, enter yes . 15 when asked if you want the new kernel to boot by default press y . 16 when asked if you want ...

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    Chapter 6 unix settings configuring for linux 62 lto-3 tape drive user’s guide you may see output similar to: (scsi0) adapter> found at pci 0/16/0 to find existing scsi devices execute the command: cat /proc/scsi/scsi you may see output similar to: host: scsi0 channel: 0 id:6 lun:00 vendor: certance...

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    Chapter 6 unix settings configuring for sgi irix lto-3 tape drive user’s guide 63 configuring for sgi irix 6 finding current scsi controllers and targets 6 to properly attach scsi devices to hosts it is necessary to ensure that each target device has a unique scsi address. The command hinv can be us...

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    Chapter 6 unix settings configuring for hp-ux 11.0 64 lto-3 tape drive user’s guide m tcan_compress, 40, 5*60, 10*60, 10*60, 3*3600, 512, 256*512, tpsc_default_dens_count, tpsc_defalt_hwg_dens_names, tpsc_default_alias_dens_names, {0}, 0, 0, 0, 0, (u_char*) 0}, after modifying the configuration file...

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    Chapter 6 unix settings configuring for hp-ux 11.0 lto-3 tape drive user’s guide 65 • x is the data under h/wpath from the ioscan . • y is the data under i from the ioscan . • z is the tape device identifier number. You can execute an ls command for the /dev/rmt directory to choose an identifier num...

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    Chapter 6 unix settings configuring for hp-ux 11.0 66 lto-3 tape drive user’s guide.

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    Lto-3 tape drive user’s guide 67 chapter 7 7 troubleshooting guide this chapter contains best practices for getting the most out of your lto-3 tape drive. This chapter also contains troubleshooting information you can use to identify and resolve tape drive problems in the unlikely even you encounter...

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    Chapter 7 troubleshooting guide installation best practices 68 lto-3 tape drive user’s guide do not: 7 • attach the tape drives to a non-lvd scsi controller, as this will degrade the performance of the tape drive and the performance of your backups. • attach non-lvd scsi devices on the same bus cabl...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 69 ensure that the scsi cable is of high quality and conforms to ultra 160 scsi specifications. A lesser quality cable or a cable that does not conform to the ultra 160 scsi specification may cause intermittent...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 70 lto-3 tape drive user’s guide • if the tape drive is not recognized during the scsi controller scan, check the power led to make sure the tape drive is receiving power. If the power led is not illuminated, check the power connections to ...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 71 internal tape drive: 7 1 power down the system. 2 be sure there are no scsi id conflicts between the tape drive and other scsi devices. 3 be sure you are using a proper scsi cable and proper termination. 4 c...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 72 lto-3 tape drive user’s guide red hat linux 7 the tape driver for red hat linux is called “ st ”. This driver is automatically installed when red hat linux is installed on your system. When red hat linux boots, the operating system recog...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 73 2 if the power led is illuminated but other leds are on or flashing. Check to see if other led activity is normal or abnormal (see table 4 on page 25). 3 if the power-on-self-test failure leds are on, contac...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 74 lto-3 tape drive user’s guide tape will not eject from the drive 7 1 be sure the tape drive is powered on. If the power led is not illuminated, check whether power is being applied to the system and/or the desktop tape drive if the tape ...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 75 2 if the hardware or firmware error or manual intervention led is flashing after the tape drive is rebooted, the tape may be stuck. Contact customer support. Emergency reset and emergency cartridge eject 7 i...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 76 lto-3 tape drive user’s guide a media error occurred during write or read operation on the tape drive. Review the troubleshooting procedures to ensure that the proper scsi cabling and termination practices are being followed. Restart the...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 77 be destroyed . If the tape drive passes the diagnostic write/read test, perform backup again. If the tape drive fails the diagnostic, the drive may be bad. Contact customer support. Tape is write protected 7...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 78 lto-3 tape drive user’s guide or the tape drive has a hardware fault: 1 1.Turn the tape drive off and then on again. 2 2.Restart the operation. 3 3.If the problem persists, call the tape drive supplier helpline. Check the tape drive user...

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    Chapter 7 troubleshooting guide troubleshooting suggestions lto-3 tape drive user’s guide 79 this message means the tape drive does not recognize the cleaning tape as being of a valid type. You may have purchased a cleaning tape that is not supported by the tape drive. Purchase a supported cleaning ...

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    Chapter 7 troubleshooting guide troubleshooting suggestions 80 lto-3 tape drive user’s guide the method of performing the backups can also be a factor in “slow” backups. Data sent to the tape drive over a network connection and delays in data transfer over a network connection can cause backups to s...

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    Lto-3 tape drive user’s guide 81 index a aix 4.1 settings 58 b backup/restore problems 75 best practices 67 blink codes 25 c cartridges care and maintenance 28 ejecting 75 loading 26 specifications 47 troubleshooting 72 unloading 26 write-protecting 27 , 77 checking scsi termination desktop drive 20...

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    Index 82 lto-3 tape drive user’s guide intelligent 37 data integrity 33 error-correction code 34 servo-tracking faults 35 dec/compaq unix settings 54 desktop drive checking scsi termination 20 connecting a power cable 21 connecting a scsi cable 19 installation instructions 18 installing the lto driv...

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    Index lto-3 tape drive user’s guide 83 connecting a power cable 18 connecting a scsi cable 14 connecting a serial cable 16 guidelines and cautions 5 installation instructions 8 installing the lto driver 18 mounting 11 quick start 4 scsi id 8 terminator power 10 l layout of track 31 linux settings 61...

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    Index 84 lto-3 tape drive user’s guide slow backups 79 specifications drive performance 43 electromagnetic compatibility 50 environmental requirements 44 injected noise 45 lto cartridge 47 mean time between failures 46 physical 40 power 42 regulatory compliance 48 reliability 45 sun (solaris 2.4, 2....