Step 1: Check the autoloader’s SCSI ID

Note Your HP StorageWorks DAT autoloader is shipped with a default SCSI ID of 5. Each device on the SCSI bus must have a unique SCSI ID number. The autoloader can be assigned any unused ID between 0 and 15. Do not use SCSI ID 7, which is reserved for the SCSI controller. SCSI ID 0 is typically assigned to the boot disk and should also not be used unless the autoloader is on a dedicated SCSI bus.

1Determine whether you need to change the SCSI ID from the default of 5.For many operating systems you can install HP Library & Tape Tools from the

HP StorageWorks Tape CD-ROM and run the “Install Check” to check your server’s current SCSI configuration (see page 37). This will provide information about the SCSI bus and the SCSI IDs in use.

The UNIX Configuration Guide on the HP StorageWorks Tape CD-ROM also contains instructions on how to determine the SCSI IDs of existing devices on UNIX servers.

2Change the autoloader’s SCSI ID, if necessary.

Use a small screwdriver or a ball-point pen to press the indented SCSI ID selector buttons on the rear panel (see figure 3) until the required value is displayed. Do not use a pencil because small bits of graphite could contaminate the drive.

Note The server and the autoloader SCSI IDs are only checked at power-on. To change the SCSI ID after installation, power down both the server and the autoloader, change the autoloader’s SCSI ID, power up the autoloader, and then power up the server.

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