HP VS80 User Manual download pdf (Page 58)

58 Diagnostics and Troubleshooting Chapter 4

SCSI ID

Changed drive SCSI ID, but

the host server does not

recognize the new ID.

■ Make sure that all SCSI devices on the same bus have unique ID

numbers.

■ If the SCSI bus is narrow (50-pin) only SCSI IDs 0 through 7 are

available.

■ Make sure that you cycle power on the autoloader after

changing the SCSI ID.

■ Reboot the host server.

Autoloader performance

The autoloader is not efficiently

backing up data.

■ Check the network bandwidth from the host computer if you are

backing up data over a network. Consider comparing to a local-

only backup.

■ Make sure that the autoloader is on its own SCSI bus and not

daisy-chained to another tape drive or to the hard drive being

backed up.

■ Clean the tape drive. See Cleaning the Tape Drive on page 36

for instructions.

■ Try a new cartridge. A marginal cartridge can cause

performance problems due to bad spots on the tape requiring

retries.

■ Make sure that the data is being compressed.

■ Check the size of the files. Small file size can impact

performance.

■ Confirm that the backup application is utilizing block sizes of at

least 32KB, preferably 64KB. Refer to the backup application

documentation for details.

Table 4 Troubleshooting Table

Problem Solution

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 89 90

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HP VS80 User Manual Page 58