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Manual Dell 0TK131 Rev. A01

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  • Dell 0TK131 Rev. A01 - page 1

    Dell™PowerVault™LTO -4- 120 Tape Drive User's Guide Preface Introduction Installing the LTO Driver Software Linux Configuration Procedures Operation Theory Specifications Troubleshooting Guide Getting Help  Information in this document is subject to change without notice. © 2008 Dell Inc. All rights reserved. P/N 0TK131 Rev. A ...

  • Dell 0TK131 Rev. A01 - page 2

    Back to Contents Page  Introduction Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter provides an introductory overview of the Dell PowerVault LTO - 4- 120 Half - Height tape drive.  Overview  Features  Overview The PowerVault LTO - 4- 120 Half - Height tape drive is a high - performance, 16 - ...

  • Dell 0TK131 Rev. A01 - page 3

    Back to Contents Page  Installing the LTO Driver Software Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter explains how to install the LTO driver software. If you intend to use the PowerVault LTO - 4- 120 Half - Height tape drive with the Microsoft ® native backup applet on a Windows Server ® 2003 operating syst ...

  • Dell 0TK131 Rev. A01 - page 4

    Back to Contents Page Linux Configuration Procedures Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter describes how to configure various Linux systems to recognize and obtain optimal performance from the Dell PowerVault LTO - 4- 120 Half - Height tape drive.  Configuring Linux Environments This subsection provides ...

  • Dell 0TK131 Rev. A01 - page 5

     ...

  • Dell 0TK131 Rev. A01 - page 6

    Back to Contents Page  Operation Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter describes how to operate the Dell PowerVault LTO -4- 120 Half - Height tape drive.  Understanding the LTO -4- 120 Front Panel Display  Using LTO Tape Cartridges  Cleaning the Tape Drive  Performing an Emergenc ...

  • Dell 0TK131 Rev. A01 - page 7

    Loading a Tape Cartridge To load an Ultrium tape cartridge into the Dell PowerVault LTO - 4- 120 Half - Height tape drive, perform the following steps: 1. Insert the cartridge into the slot. 2. Push the cartridge further into the drive until the drive senses the cartridge and automatically completes the load operation. Alternatively, use a library ...

  • Dell 0TK131 Rev. A01 - page 8

    l  Used with non - approved media l  Operated in a hot, dusty environment When this happens, the drive can experience excessive errors while reading or writing, and during operations, the LTO - 4- 120 displays the letter "C" on the seven - segment display and illuminates the amber status LED and the LED dot. This means that the driv ...

  • Dell 0TK131 Rev. A01 - page 9

    Back to Contents Page  Theory Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter describes operational theories used in the Dell PowerVault LTO - 4 - 120 Half - Height tape drive.  Track Layout  Recording Method  Data Buffer  Data Integrity  Data Compression  Track Layout With the Po ...

  • Dell 0TK131 Rev. A01 - page 10

    adaptive Finite Impulse Response (FIR) filters that modify the equalization of each read channel dynamically to compensate for many of those changes. The error rate of the PowerVault LTO - 4 - 120 Half - Height tape drive is less than 1 hard error in 10 17 bits. The undetectable error rate is 1 in 10 27 bits read.  Error - correction Code (ECC) ...

  • Dell 0TK131 Rev. A01 - page 11

    Data Compression Considerations In an effective data - compression method, several factors are important: l  The amount of compression, which is measured by the compression ratio. This ratio compares the amount of uncompressed data to the amount of compressed data. It is obtained by dividing the size of the uncompressed data by the size of the c ...

  • Dell 0TK131 Rev. A01 - page 12

    Back to Contents Page  Specifications Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter provides technical specifications for the Dell PowerVault LTO - 4 - 120 Half - Height tape drive.  System Requirements  Physical Specifications  Power Specifications  Drive Performance Specifications ? ...

  • Dell 0TK131 Rev. A01 - page 13

     Power Specifications Maximum voltage and power specifications for the PowerVault LTO - 4 - 120 Half - Height tape drive are listed in Table 6 -2 and Table 6 -3 . Specifications are the same as those for other SCSI drives unless otherwise noted. Table 6 - 2. Voltage and Current Specifications Table 6 - 3. Power Dissipation  Drive Performance ...

  • Dell 0TK131 Rev. A01 - page 14

    Table 6 - 5 lists the environmental specifications of the PowerVault LTO - 4- 120 Half - Height tape drive. Table 6 - 5. Environmental Requirements  Injected Noise Specifications The LTO - 4 - 120 Half - Height tape drive operates without degradation of error rates with 100 mV of noise injected between the chassis and 0 V at the power connector ...

  • Dell 0TK131 Rev. A01 - page 15

    Table 6 - 7 lists the basic environmental tolerances for LTO Ultrium cartridges. Table 6 - 7. Environmental Tolerances If during storage and/or transportation a cartridge has been exposed to conditions outside the specified values, it must be conditioned before use in the operating environment. The conditioning shall be exposure to the operating en ...

  • Dell 0TK131 Rev. A01 - page 16

    Back to Contents Page  Troubleshooting Guide Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide This chapter provides best - practice installation guidelines for getting the most out of your Dell PowerVault LTO - 4 - 120 Half - Height tape drive, and troubleshooting information you can use to identify and resolve tape drive prob ...

  • Dell 0TK131 Rev. A01 - page 17

    scans for devices. You should see messages similar to: If the tape drive is recognized during system startup, the problem has been resolved. Otherwise, proceed to step 3 to determine whether the tape drive is receiving power. 3. If the tape drive is not recognized when the SAS controller scans for devices, check the two - color status LED on the LT ...

  • Dell 0TK131 Rev. A01 - page 18

     Red Hat Linux Operating System Environments The tape driver for Red Hat Linux, called st , is included as part of the Red Hat Linux operating system. When Red Hat Linux starts, the operating system recognizes the tape drive and automatically configures it as a device in the /dev directory. If it is the first tape device in the /dev directory, t ...

  • Dell 0TK131 Rev. A01 - page 19

    5. Attempt to insert a different tape cartridge.  6. If a tape still cannot be inserted into the tape drive, contact Technical Support to resolve the possible problem with the tape drive.  Drive Does Not Eject the Tape Cartridge If you cannot eject a tape cartridge from the PowerVault LTO - 4 - 120 Half - Height tape drive:  1. Verify that ...

  • Dell 0TK131 Rev. A01 - page 20

    ¡  Monitoring the SAS controller activity during system startup.  3. The method of performing tape backups can be a factor in slow backup operations. Data sent to the tape drive over a network connection and delays in data transfer over a network connection can cause backups to slow down. To determine whether the method of performing tape ba ...

  • Dell 0TK131 Rev. A01 - page 21

     5. Retry the backup operation. If the backup retry: ¡  Succeeds, the problem is resolved. ¡  Fails, contact Technical Support to resolve the possible problem with the tape drive.  Write - Protected TapeAlert Messages Write - protected TapeAlert messages can appear in response to: l  Actual write - protected tape cartridges l  D ...

  • Dell 0TK131 Rev. A01 - page 22

    3. Check the tape drive front panel LED indicators to determine the operational condition of the drive (see Table 4 - 1 ).  Tape Cleaning TapeAlert Messages Tape cleaning TapeAlert messages indicate problems when you insert a cleaning cartridge into the PowerVault LTO - 4 - 120 Half - Height tape drive. Like hardware failure TapeAlert messages, ...

  • Dell 0TK131 Rev. A01 - page 23

    Back to Contents Page  Getting Help Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide  Contacting Dell  Contacting Dell For customers in the United States, call 800 - WWW - DELL (800 - 999 - 3355). Dell provides several online and telephone - based support and service options. Availability varies by country and prod ...

  • Dell 0TK131 Rev. A01 - page 24

    Back to Contents Page Preface Dell™PowerVault™LTO -4 - 120 Tape Drive User's Guide  Audience  Purpose  Document Organization  Related Documents Audience This guide is written for users of the Dell PowerVault LTO - 4- 120 Half - Height tape drive. Purpose This guide provides information about the Po ...

  • Dell 0TK131 Rev. A01 - page 25

    ¡  Serial Attached SCSI - 1.1 (SAS - 1.1) INCITS 417 - 2006 ¡  Serial Attached SCSI - 2 (SAS - 2) in development  l INCITS Technical Committee T11 (Device Level Interfaces) Standards ¡  Fibre Channel Arbitrated Loop (FC - AL - 2) Amendment 1 INCITS 332.1999/AM1 - 2003Fibre Channel Generic Services - 4 (FC - GS - 4) INCITS 387 - 2004 ...

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