HP A7518B HP StorageWorks SDLT Tape Drive Getting Started Guide - internal mod - Page 15

Step 2: Check the drive’s SCSI ID - 600 drive

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Step 2: Check the drive's SCSI ID Your HP StorageWorks SDLT 600 drive is shipped with a default SCSI ID of 6, but 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. 1 Determine whether you need to change the SCSI ID from the default of 6. For example, in multiinitiator parallel SCSI environments (such as ProLiant clusters) it is possible that the initiator devices will use IDs 6 and 7. In this case, you will need to change the tape drive's SCSI ID. For most operating systems you can install HP Library & Tape Tools from the link on the HP StorageWorks Tape CD-ROM and run the "Install Check" to check your server's current SCSI configuration (see page 33). This will provide information about the SCSI bus and the SCSI IDs in use. For UNIX systems, check the UNIX Configuration Guide on the HP StorageWorks Tape CD-ROM for instructions on how to determine the SCSI IDs of existing devices. Caution Static electricity can damage electronic components. Always wear an antistatic wriststrap if possible. If not, to equalize the electromagnetic charges, touch a bare metal part of the server (such as the back plate) before you remove the tape drive from its bag. 2 Change the tape drive's SCSI ID, if necessary. The SCSI ID is set using jumpers on a set of pins at the rear of the drive. Use tweezers or small pliers to move the jumpers to the pattern corresponding to the ID you want, see Figure 3a. If you do not install any jumpers, the firmware makes the drive default to SCSI ID 6. If you do install jumpers, the left-hand jumper (NC) should always be set. Spare jumpers are provided with the drive. Termination power Your HP StorageWorks SDLT 600 drive is shipped with terminator power enabled, see Figure 3b. This allows the drive, in addition to the SCSI controller, to provide the termination power. It is not normally disabled. Refer to the documentation that came with your SCSI adapter to check that this is the correct configuration. If you need to disable it, simply remove the jumper. 11

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11
Step 2: Check the drive’s SCSI ID
1
Determine whether you need to change the SCSI ID from the default of 6. For example, in multi-
initiator parallel SCSI environments (such as ProLiant clusters) it is possible that the initiator
devices will use IDs 6 and 7. In this case, you will need to change the tape drive’s SCSI ID.
For most operating systems you can install HP Library & Tape Tools from the link on the
HP StorageWorks Tape
CD-ROM and run the “Install Check” to check your server’s current
SCSI configuration (see page 33). This will provide information about the SCSI bus and the
SCSI IDs in use.
For UNIX systems, check the
UNIX Configuration Guide
on the
HP StorageWorks Tape
CD-ROM
for instructions on how to determine the SCSI IDs of existing devices.
Caution
Static electricity can damage electronic components. Always wear an antistatic wriststrap if
possible. If not, to equalize the electromagnetic charges, touch a bare metal part of the server
(such as the back plate) before you remove the tape drive from its bag.
2
Change the tape drive’s SCSI ID, if necessary.
The SCSI ID is set using jumpers on a set of pins at the rear of the drive. Use tweezers or small
pliers to move the jumpers to the pattern corresponding to the ID you want, see Figure 3a. If
you do not install any jumpers, the firmware makes the drive default to SCSI ID 6. If you do
install jumpers, the left-hand jumper (NC) should always be set.
Spare jumpers are provided with the drive.
Termination power
Your HP StorageWorks SDLT 600 drive is shipped with terminator power enabled, see Figure
3b. This allows the drive, in addition to the SCSI controller, to provide the termination power.
It is not normally disabled. Refer to the documentation that came with your SCSI adapter to
check that this is the correct configuration. If you need to disable it, simply remove the jumper.
Your HP StorageWorks SDLT 600 drive is shipped with a default SCSI ID of 6, but 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.