Chapter 7 Troubleshooting Guide
Problems During Backup/Restore Operations
|
| 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 tape. |
|
| If the tape drive issues a message to backup software to instruct you |
|
| to clean the tape drive, you may see the message: |
|
| “The tape drive needs cleaning: |
|
| 1. If the operation has stopped, eject the tape and clean the drive. |
|
| 2. If the operation has not stopped, wait for it to finish and then clean the |
|
| drive. |
|
| Check the tape drive users manual for device specific cleaning instructions.” |
|
| 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 | |
|
| achieve the highest possible transfer rate, the |
|
| drive MUST be attached to a Low Voltage Differential ( LVD ) SCSI |
|
| controller capable of a minimum of 80 MB/s and MUST not share the |
|
| same SCSI bus as another active SCSI device such as hard drives. |
|
| 1 Is the tape drive attached to an LVD SCSI controller? This can be |
|
| determined by viewing the boot process of the system and looking to |
|
| see what controller the tape drive is attached to. There may be boot |
|
| log files that can be examined to determine what SCSI controller the |
|
| tape drive is attached to. |
|
| 2 If the tape drive is not attached to an LVD SCSI controller, attach the |
|
| tape drive to a LVD SCSI controller to achieve best possible hardware |
|
| performance for best possible transfer rate. |
|
| 3 If the tape drive is attached to an LVD SCSI controller, see whether |
|
| the tape drive is the only device on the SCSI cable? This can be |
|
| determined by viewing Windows Device Manager, viewing Unix/ |
|
| Linux logs, or by viewing SCSI controller during system boot up. |
|
| 4 If other SCSI devices are attached to the SCSI controller and are active |
|
| during the time when a backup is performed to the tape drive, have |
|
| the tape drive as the only device on the SCSI cable to achieve the best |
|
| possible backup performance. |
75 |