HP StorageWorks Ultrium Full-Height SCSI Tape Drives User Guide (EH853-90905, August 2007)

Figure 15 Insertin g 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 devi

ce on the SCSI bus must have a unique SCSI ID.

• For HP P roLiant ser vers 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 o

ther servers and when used with separate HBAs, it can be assigned any unused ID

between

0 and 15. D o 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.

Typical

ly, 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 9 60 tape drives.

If you d

aisy-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 com puter’s current SCSI conﬁguration (see

Diagnostic tools ). 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 provides instructions on

how to determine the SCSI I Ds of existing devices.

2. Set the appropriate switch. Figure 16 shows the add ress switch on the back panel of the

HP T

ape Array 5300.

Ultrium full-height SCSI Tape D rives