NonStop S-Series Hardware Installation and FastPath Guide (G06.29+)

Performing Post-Startup Tasks
HP NonStop S-Series Hardware Installation and FastPath Guide—541880-002
9-8
Test the Disk Drives
Test the Disk Drives
You should test disk drives whenever you install a new system, replace a disk drive, or
add a disk drive:
1. At the SCF prompt, check the status of all disks on the system:
-> STATUS DISK $*-*
2. In the display, ensure that paths to all installed disk drives are available. A path is
available if the State column indicates STARTED. If no disk drive is installed in a
slot, the Status column indicates INACTIVE, the State column indicates STOPPED,
and the Substate column indicates HARDDOWN.
The following shows an example of a partial SCF STATUS DISK listing:
3. Determine the preferred path for each disk using the STATUS DISK command and
specifying the name or logical device number of that disk. The asterisk (*) in the
response indicates the preferred path. A mirrored disk volume has four paths (two
for each physical disk) and two preferred paths.
4. For each disk drive whose paths you want to test, check that each path to that disk
drive can be used as the preferred path. To test the paths to a disk named
$DATA00:
a. Enter the following SCF command:
->SWITCH $DATA00-B
For the primary drive of the $DATA00 disk, this command switches the current
path, which is the primary path ($DATA00-P), to the backup path ($DATA00-B).
b. Enter the STATUS DISK $DATA00 command. See Step 3 to check that the
path switch occurred. Make sure the processor number in the Primary PID
column is the same as it was before the switch.
STORAGE - Status DISK \Example.$DATA00
LDev Path Status State Substate Primary Backup
PID PID
06 PRIMARY ACTIVE STARTED 0,267 1,267
06 BACKUP INACTIVE STARTED 0,267 1,267
06 MIRROR ACTIVE STARTED 0,267 1,26
06 MIRROR-BACKUP INACTIVE STARTED 0,267 1,267
STORAGE - Status DISK \Example.$DATA01
LDev Path Status State Substate Primary Backup
PID PID
07 PRIMARY INACTIVE STOPPED HARDDOWN 0,33 1,33
07 BACKUP INACTIVE STOPPED HARDDOWN 0,33 1,33
07 MIRROR INACTIVE STOPPED HARDDOWN 0,33 1,33
07 MIRROR-BACKUP INACTIVE STOPPED HARDDOWN 0,33 1,33
->STATUS DISK $DATA00
STORAGE - Status DISK \Example.$DATA00
LDev Primary Backup Mirror MirrorBackup Primary Backup
PID PID
06 *STARTED STARTED *STARTED STARTED 0,30 1,30