SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Configuring Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-008
6-14
Changing a Mirrored Volume Into Two Nonmirrored
Disks
Changing a Mirrored Volume Into Two Nonmirrored Disks
This procedure converts a mirrored, internal volume into two nonmirrored disks without
destroying files on either disk.
1. Review the Considerations for RENAME DISK on page 6-27.
2. Stop both halves of the mirrored volume:
-> STOP $DATA01
3. Delete the mirror from the system configuration database:
-> DELETE $DATA01-M
4. Restart the disk process:
-> START $DATA01
5. Add the deleted mirror to the system configuration database as a nonmirrored disk
by specifying a new name and its location:
-> ADD $SPARE00, SENDTO STORAGE, PRIMARYLOCATION (1,1,2)
6. Start the disk process in the SERVICING state, substate SPECIAL in preparation
for changing its name:
-> START $SPARE00, SPECIAL
7. Change the disk name on the disk label to make the configuration record equal the
label, and restart the disk:
-> RENAME $SPARE00, $SPARE00
Changing Two Nonmirrored Disks Into a Mirrored Volume
This example converts two adjacent, internal disks into a mirrored, internal volume.
The nonmirrored disk $DATA02 is in group 01, module 1, slot 3. The disk to become
the mirror disk is in slot 4 in the same enclosure. Automatic configuration is off.
1. Review information about the MIRRORLOCATION attribute on page 14-22.
2. Stop the disk:
-> STOP $DATA02
3. Identify the unconfigured disk in slot 4 as the mirrored volume of $DATA02 in
slot 3:
-> ALTER $DATA02, MIRRORLOCATION (1,1,4)
4. Start the primary half of the mirrored volume in slot 3:
-> START $DATA02-P
5. Revive the mirrored half in slot 4:
-> START $DATA02-M