Set The Drive's Scsi Id; Inserting The Tape Drive - HP 330834-B21 - StorageWorks Ultrium 460 Tape Library Drive Module User Manual

Figure 15 Inserting the tape drive
4.
If there are empty bays, insert a blanking plate. This is essential to ensure adequate airflow is
maintained. Failure to do so may affect tape drive performance.
See the documentation with the tape array for details on installing blanking plates.

Set the drive's SCSI ID

To set the tape drive's SCSI ID you need to set the appropriate switch on the rear of the tape array. The
number of address switches corresponds to the number of tape drives that can be inserted into the
tape array.
Each device on the SCSI bus must have a unique SCSI ID.
• For HP ProLiant servers where the tape drive is connected to the built-in SCSI bus, we recommend
that the tape drive is assigned a SCSI ID between 1 and 6.
• For all other servers and when used with separate HBAs, it 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 tape drive is on a
dedicated SCSI bus.
Typically, the HP Tape Array may hold up to four tape drives where each drive is attached to a separate
server. Under this configuration, the SCSI IDs of each tape drive will not conflict with each other as they
are each installed onto a separate SCSI bus. This is the recommended configuration for Ultra320 devices,
such as the Ultrium 1840 and Ultrium 960 tape drives.
If you daisy-chain devices make sure that the devices are of the same SCSI type and that each device on
the same SCSI bus has a unique SCSI ID. Do not daisy-chain more than two devices on the same SCSI
bus and make sure that the end device is terminated. Do not mix drive families (only daisy-chain with
other Ultrium tape drives) and do not put Ultra160 drives on the same bus as any Ultra320 device.
1.
Decide which SCSI ID to use.
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 computer's current SCSI configuration (see
Diagnostic tools
UNIX Configuration Guide on the HP StorageWorks Tape CD-ROM, also provides instructions on
how to determine the SCSI IDs of existing devices.
2.
Set the appropriate switch.
HP Tape Array 5300.
). This will provide information about the SCSI bus and the SCSI IDs in use. The
Figure 16 shows the address switch on the back panel of the
Ultrium full-height SCSI Tape Drives
37