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Dell PowerVault LTO-4-120 User Manual

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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. A01
Trademarks used in this text: Dell, the DELL logo, and PowerVault are trademarks of Dell Inc. Microsoft is a registered trademark of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc.
disclaims any proprietary interest in trademarks and trade names other than its own.
Initial release: May 2008
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Summary of Contents for Dell PowerVault LTO-4-120

  • Page 1 Trademarks used in this text: Dell, the DELL logo, and PowerVault are trademarks of Dell Inc. Microsoft is a registered trademark of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc.
  • Page 2 The PowerVault LTO-4-120 Half-Height tape drive is a high-performance, 16-channel tape drive that complies with the LTO interchange specifications. The PowerVault LTO-4-120 Half-Height tape drive uses Ultrium data cartridges. Their capacity is maximized using intelligent data compression. The drive has a capacity of 800 GB (1,600 GB, assuming 2:1 data compression).

  • Page 3: Installing The Lto Driver Software

    9. Scroll down and click Tape Drive, and then click Next. 10. Click Have Disk, type D:\i386 or D:\amd64, replacing D: with the drive letter for the CD drive into which you inserted the Dell PowerVault Documentation and Drivers CD, and then click OK.
  • 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 procedures for configuring Linux operating system environments.
  • Page 5   Get other manuals https://www.bkmanuals.com...

  • Page 6: Operation

    As shown in Figure 4-1, the Dell PowerVault LTO-4-120 Half-Height tape drive front panel display has three LED indicators that reflect the operating condition of the drive: A seven-segment LED display that provides a single-character code for status, diagnostics, and maintenance functions...

  • Page 7: Cleaning The Tape Drive

    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.

  • Page 8: Performing An Emergency Cartridge Eject

    Each time you use the LTO cleaning cartridge, the cleaning media advances to a new, unused section. After approximately 50 cleanings, all of the media will be used up. The Dell PowerVault LTO-4-120 drive displays the number "7" on the seven-segment LED, turns off the LED dot, flashes the amber status LED, and holds the LTO cleaning cartridge in the drive.

  • Page 9: Track Layout

      Data Compression  Track Layout With the PowerVault LTO-4-120 Half-Height tape drive, there are 896 data tracks on the LTO tape, numbered 0 through 895. Data track 895 is the track closest to the bottom edge of the tape (the reference edge).

  • Page 10: Error-Correction Code (Ecc)

    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 bits.

  • Page 11: Data Compression Considerations

     While control symbols allow switching to Scheme 2, this should never be used by operational software because this capability is only for diagnostic and testing purposes. Do not use software data compression because the built-in intelligent data compression of the PowerVault LTO-4-120 Half-Height tape drive is much more efficient than software data compression.

  • Page 12: System Requirements

    Enterprise Linux 4.0 or later, or SUSE Linux 9 or later  CD ROM drive  Physical Specifications Table 6-1 lists the physical specifications of the PowerVault LTO-4-120 Half-Height tape drive, which is shown in Figure 6-1. Table 6-1. Physical Specifications  ...

  • Page 13: Power Specifications

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

  • Page 14: 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 at any frequency between 45 Hz and 20 MHz.  Reliability Specifications The PowerVault LTO-4-120 Half-Height tape drive is designed for maximum reliability and data integrity. Table 6-6 lists the reliability specifications.

  • Page 15: Cartridge Memory

    Table 6-7 lists the basic environmental tolerances for LTO Ultrium cartridges. Table 6-7. Environmental Tolerances     Specification Value Maximum localized temperature-permanent tape damage Greater than 52° C Operating temperature 10° C to 45° C Relative humidity (non-condensing) 20% to 80% storage, 10% to 80% operating Wet bulb temperature 26° C max 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.

  • Page 16: Troubleshooting Guide

     Troubleshooting Suggestions   Computer Does Not Start If the computer started and operated properly before installing a SAS HBA and the PowerVault LTO-4-120 Half-Height tape drive, but does not start now:   1. Remove the SAS HBA. 2. Restart the system.

  • Page 17: Computer Software Does Not Recognized The Tape Drive

    scans for devices. You should see messages similar to:   Target Device   Quantum Ultrium 4 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.

  • Page 18: Drive Does Not Load The Tape Cartridge

    1:0:0:0: Attached SCSI tape st0   Drive Does Not Load the Tape Cartridge If you cannot load a tape cartridge into the PowerVault LTO-4-120 Half-Height tape drive:   1. Verify that the two-color status LED is green and the seven-segment LED is off/blank.

  • Page 19: Drive Does Not Eject The Tape Cartridge

    Many factors can make backups appear to be slow. To achieve the highest possible transfer rate, the PowerVault LTO-4-120 Half-Height tape drive must be attached to a SAS HBA capable of a minimum of 3 GB/sec. Verify that the tape drive is attached to a Dell SAS HBA. You can do this by:  Watching the system the startup process...

  • Page 20: Failed Operations Tapealert Messages

    Failed Operations TapeAlert Messages The PowerVault LTO-4-120 Half-Height tape drive supports the TapeAlert standard, and issue the appropriate alert messages in response to operational error conditions. You can view TapeAlert messages either directly, on the system screen, or in the log file of your backup application. Note, however, that some operational error conditions can cause more than one TapeAlert message.
  • Page 21 The tape drive has a hardware fault: 1. Turn the tape drive off and then on again. 2. Restart the operation. 3. If the problem persists, call Dell Technical Support.   1. Press the eject button on the front panel to eject the tape cartridge.
  • Page 22  Seven-segment LED displaying a number   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, tape cleaning TapeAlert messages are descriptive and straightforward.  ...

  • Page 23: Getting Help

    For customers in the United States, call 800-W W W-DELL (800-999-3355). NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area.

  • Page 24: Document Organization

    Getting Help explains how to contact Dell for technical support.   Related Documents The following subsection identifies the primary documents that are related to the PowerVault LTO-4-120 Half-Height tape drive.   Standards Conformance The Small Computer System Interface is described in standards that include several versions and a number of individual documents. The original Small Computer System Interface Standard, X3.131-1986, is referred to as SCSI-1.
  • Page 25  Serial Attached SCSI - 1.1 (SAS-1.1) INCITS 417-2006 ¡  Serial Attached SCSI - 2 (SAS-2) in development ¡   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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