Chapter 7 Troubleshooting Guide
Problems During Backup/Restore Operations
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| This message means the tape drive does not recognize the cleaning |
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| tape as being of a valid type. You may have purchased a cleaning |
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| tape that is not supported by the tape drive. Purchase a supported |
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| cleaning tape. |
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| If the tape drive issues a message to backup software to instruct you |
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| to clean the tape drive, you may see the message: |
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| “The tape drive needs cleaning: |
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| 1. If the operation has stopped, eject the tape and clean the drive. |
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| 2. If the operation has not stopped, wait for it to finish and then clean the |
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| drive. |
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| Check the tape drive users manual for device specific cleaning instructions.” |
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| This message means you should use a supported cleaning tape. |
| There are many factors that can make backups appear to be “slow.” To | |
| Slow Backups | |
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| achieve the highest possible transfer rate, the |
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| drive MUST be attached to a Low Voltage Differential ( LVD ) SCSI |
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| controller capable of a minimum of 80 MB/s and MUST not share the |
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| same SCSI bus as another active SCSI device such as hard drives. |
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| 1 Is the tape drive attached to an LVD SCSI controller? This can be |
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| determined by viewing the boot process of the system and looking to |
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| see what controller the tape drive is attached to. There may be boot |
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| log files that can be examined to determine what SCSI controller the |
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| tape drive is attached to. |
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| 2 If the tape drive is not attached to an LVD SCSI controller, attach the |
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| tape drive to a LVD SCSI controller to achieve best possible hardware |
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| performance for best possible transfer rate. |
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| 3 If the tape drive is attached to an LVD SCSI controller, see whether |
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| the tape drive is the only device on the SCSI cable? This can be |
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| determined by viewing Windows Device Manager, viewing Unix/ |
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| Linux logs, or by viewing SCSI controller during system boot up. |
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| 4 If other SCSI devices are attached to the SCSI controller and are active |
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| during the time when a backup is performed to the tape drive, have |
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| the tape drive as the only device on the SCSI cable to achieve the best |
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| possible backup performance. |
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