Replacing an Internal Disk Drive CRU

Switching and Testing Paths to a Nonmirrored Disk
Drive Using SCF
Follow these instructions to test all paths to a nonmirrored disk drive. In this example, the disk
drive $DATA21 has been replaced. The -P and -B 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 $DATA21-B
->STATUS $DATA21-*
STORAGE - Status DISK \TOYS.$DATA21-*
LDev Path Status State Substate Primary Backup
PID PID
87 PRIMARY INACTIVE STARTED 2,262 3,262
87 BACKUP ACTIVE STARTED 2,262 3,262
->
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 $DATA21, FORCED
->STATUS $DATA21-*
STORAGE - Status DISK \TOYS.$DATA21-*
LDev Path Status State Substate Primary Backup
PID PID
87 PRIMARY INACTIVE STARTED 3,262 2,262
87 BACKUP ACTIVE STARTED 3,262 2,262
->
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.