HP BACKCOPY Reference Manual page 81

1. Close or make inactive any partitioned files.
2. Check the current state of the disk to be backed up.
1> SCF
STATUS DISK $DATA
If the output from the STATUS DISK command shows that the disk to be backed up is not in a
normal UP state, perform whatever steps are necessary to return this disk to a normal UP state.
3. Determine if there are any unspared defective sectors on either half of the mirrored volume to
be backed up:
INFO DISK $DATA, BAD
If there are no defects, the SCF display will indicate that state.
If the SCF INFO DISK, BAD command indicates any unspared defective sectors:
a. Use the SCF CONTROL DISK, SPARE command to correct the situation.
b. Recheck the status of both halves of the mirrored volume using the SCF INFO DISK, BAD
command until there are no new defects.
4. Ensure that no disk I/O activity is occurring against the volume being backed up.
5. Issue an SCF REFRESH command for the mirrored half to be backed up:
CONTROL DISK $DATA, REFRESH
6. Issue SCF STOP DISK commands for both paths to the mirrored half being copied:
STOP DISK $DATA-M
STOP DISK $DATA-MB
7. Verify that all paths to the removed half of the mirrored volume are DOWN, and then exit
SCF:
INFO DISK $DATA, DETAIL
.
.
.
EXIT
In this example, $DATA-M was just removed, so SCF should show the paths $DATA-M and
$DATA-MB to be DOWN.
8. Enter the volume-mode BACKUP command. In this example, the mirrored half of $DATA is
being backed up to a tape mounted on $TAPE4:
1> BACKUP $TAPE4, VOLUMEMODE, $DATA-M, BLOCKSIZE 28,&
1> &DENSITY 6250
A display similar to this appears on the console:
Volume-Mode BACKUP Program - T9074D46 - (15DEC1997)
Tape: $TAPE4 Operating System: D46
Backup options: NO AUDITED, BLOCKSIZE 28, NO IGNORE,
Volume name:
Subtype: 3 ( 4104 -- 240MB )
Disk process type:
Volume label time:
$DATA has been copied to tape.
$DATA has been left in the DOWN state
This volume mode backup tape can be restored to a disk
with a formatted capacity of 75110400 bytes or
greater
9. After the volume-mode BACKUP procedure finishes, check the state of the disk. Both paths to
the mirror should be in the DOWN state.
NO OPEN, NO PARTONLY
$DATA
DP2
23Dec2001 10:57
Tape Version: 101
BACKUP Guidelines and Examples 81