NonStop S-Series Operations Guide (G06.24+)

Disk Drives: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-007
9-13
Recovery Operations for Free-Space Fragmentation
of a Disk
Recovery Operations for Free-Space Fragmentation of a Disk
Use the Disk Compression Program (DCOM) to consolidate disk space usage. For a
description of DCOM, refer to Disk Compression Program (DCOM) on page B-2.
Recovery Operations for a Full Disk
To prevent or recover from problems caused by a full disk:
1. Use the Disk Space Analysis Program (DSAP) utility to identify large, old, and little
used files.
2. If you are authorized:
•
Use the BACKUP utility to back up these disk files to tape and then purge them
from the disk. Make sure that you do not purge important system files.
•
Move files to another disk. If you are not authorized, notify your management.
Make sure that you do not move important system files.
•
Ask users to purge files.
For more information about these utilities, refer to BACKUP on page B-2 and Disk
Space Analysis Program (DSAP) on page B-2.
Recovery Operations for a Down Disk or Down Disk Path
To restart a disk or disk path:
1. If a disk path is down due to a ServerNet fabric failure, determine which paths are
affected:
a. At a TACL prompt:
> SCF
b. At the SCF prompt:
-> STATUS DISK $*-*, SUB MAGNETIC
The output indicates:
•
$DATA06-M and $DATA06-MB are stopped in the DOWN substate.
•
$WD8-M and $WD8-MB are stopped in the HARDOWN substate.
•
$DATA00-P and $DATA00-B are stopped in the HARDDOWN substate.