NonStop S-Series Operations Guide (G06.29+)

Disk Drives: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-009
9-15
Recovery Operations for a Down Disk or Down Disk
Path
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 the affected
paths. From an 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.
Corrupt
$SYSTEM
disk
If both halves of your mirrored system volume become corrupted, use an
alternate system disk if one is available. For how to create an alternate
system disk, see the DSM/SCM User’s Guide and the NonStop S-Series
Hardware Installation and FastPath Guide.
•
For internal SCSI disk drives: if there is no alternate system disk and
you cannot load from the CONFBASE file, you might be able to
perform a tape load from a system image tape (SIT) to restore the
system image files to the $SYSTEM disk (SYSnn and CSSnn
subvolumes). Then load that image into processor 0 or 1.
A tape load reinitializes the disk directory. The disk directory is
overlaid with the directory from the tape. All files on that disk are
destroyed. Perform a tape load only with the advice of the Global
Customer Support Center or your service provider.
•
For M8xxx disk drives: you cannot perform a tape load from a SIT.
Failed disk
drives
•
Internal SCSI disks: the NTL Support and Service Library describes
replacing disk drives.
•
M8xxx Fibre Channel disks: these disks are FRUs and can be
serviced or replaced only by HP-trained service personnel.
Table 9-3. Common Recovery Operations for Disk Drives (page 3 of 3)
Problem Recovery