SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

B Upgrade and Replacement Procedures
This section describes:
• “Replacing a Tape Drive” (page 362)
• “Replacing an Open SCSI Device” (page 362)
• “Upgrading a Mirrored Volume Online” (page 363)
Replacing a Tape Drive
If you physically remove a tape drive and replace it with another tape drive that is controlled by
the same adapter, the tape process automatically recognizes the new tape drive. For other details
about installing or removing a tape drive, see the documentation that comes with the tape drive
or contact your service provider.
Stop the tape drive:
-> STOP $TAPE0
1. Verify the tape drive is in the STOPPED state:
-> STATUS $TAPE0
2. Remove the device cable from the connector on the system adapter.
3. If you are using the same cable on the new tape drive, disconnect the device cable from the
old tape drive.
4. Connect the device cable to the connector on the new tape drive.
5. Always connect the device cable to the tape drive before connecting the cable to the adapter.
If the cable is not connected to the device first, the SCSI bus is unterminated and could produce
SCSI bus errors.
6. Connect the device cable from the tape drive to the system connector.
7. Start the new tape drive:
-> START $TAPE0
The tape process automatically detects that a new tape drive has been installed.
Replacing an Open SCSI Device
To replace an Open SCSI device:
1. Stop access to the device:
-> STOP $S11500
2. Verify the device is in the STOPPED state:
-> STATUS $S11500
3. Physically remove the device from the SCSI chain.
4. Configure the SCSI ID and LUN on the device according to the manufacturer’s instructions.
5. Physically install the new device in the SCSI chain.
6. Depending on the manufacturer’s instructions in Step 4, alter the configuration:
-> ALTER $S11500, SCSIID 5
7. Start the device:
-> START $S11500
The Open SCSI IOP automatically detects that a different model Open SCSI device has been
installed.
362 Upgrade and Replacement Procedures