Gebruiksaanwijzing /service van het product 0TK131 Rev. A01 van de fabrikant Dell
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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.
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.
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.
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.
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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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 o.
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.
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.
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.
¡ 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.
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.
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.
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.
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.
¡ 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.
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