Replacing an Internal Disk Drive CRU

Switching and Testing Paths to a Mirrored Disk
Drive Using SCF
Follow these instructions to test all the paths to a mirrored disk drive. In this example, the
$DATA17 mirror disk drive has been replaced. The -M and -MB paths are being tested
before operations are resumed on the replacement disk drive CRU.
1 Use the SCF SWITCH DISK command to switch the replacement disk drive to
its backup path; then use the SCF STATUS DISK command to verify that the
disk path has been switched and is working properly:
TACL>SCF SWITCH $DATA17-MB
->STATUS $DATA17
STORAGE - Status DISK \TOYS.$DATA17
LDev Primary Backup Mirror MirrorBackup Primary Backup
PID PID
88 *STARTED STARTED STARTED *STARTED 1,266 0,282
->
2 Use the SCF PRIMARY DISK, FORCED command to switch the disk volume
to its backup processor; then use the SCF STATUS DISK command to verify
the operation:
->PRIMARY $DATA17, FORCED
->STATUS $DATA17
STORAGE - Status DISK \TOYS.$DATA17
LDev Primary Backup Mirror MirrorBackup Primary Backup
PID PID
88 *STARTED STARTED STARTED *STARTED 0,282 1,266
->
Note: For G06.10 and earlier, including the FORCED keyword here
ensures the correct processor ownership. For G06.11 and later, the FORCED
keyword is not needed and has no effect.
3 Use the SCF SWITCH DISK command again to switch the replacement disk
drive back to its primary path; then use the SCF STATUS DISK command to
verify that the disk path has been switched and is working properly:
->SWITCH $DATA17-M
->STATUS $DATA17
STORAGE - Status DISK \TOYS.$DATA17
LDev Primary Backup Mirror MirrorBackup Primary Backup
PID PID
88 *STARTED STARTED *STARTED STARTED 0,282 1,266
->