SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)

Upgrade and Replacement Procedures
SCF Reference Manual for the Storage Subsystem—529937-007
D-2
Replacing an Open SCSI Device
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.
Upgrading a Mirrored Volume Online
You can replace online each disk in a mirrored volume (one at a time). The
replacement disk can be a higher capacity or faster speed. For example, you can
replace 8-GB disks with 36-GB disks without bringing down the entire volume.
1. Verify the volume is currently mirrored and that at least one path to each disk is in
the STARTED state:
-> STATUS DISK $DATA01-*
2. If the disk contains the TMF master audit-trail, either:
•
Stop TMF.
•
Use the STOP, FORCED command to allow the mirror half of the TMF MAT
volume to stop while TMF is active.
3. Bring down the mirror and mirror backup paths:
-> STOP $DATA01-M
-> STOP $DATA01-MB
4. Physically remove the stopped mirror disk.
5. Install a higher-capacity or faster disk in the location where you removed the mirror
disk.