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

Disk Drives: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-007
9-8
Monitoring the State of Disk Drives
Monitoring the State of Disk Drives
Each disk drive is configured to have two paths, the primary path and the backup path.
Thus, for a disk drive, the states of the two disk paths are represented separately.
Table 9-1 lists possible values for the current state of a disk path.
Monitoring the Use of Space on a Disk Volume
The Disk Space Analysis Program (DSAP) provides information on disk capacity, free-
space fragments, and page allocation. To check for bad sectors, use DSAP or SCF.
To check for unspared defective sectors using SCF:
-> INFO DISK $*, BAD, SEL started, sub magnetic
To check for unspared defective sectors using DSAP, at a TACL prompt:
> DSAP $*
Table 9-1. States for Disk Drive Paths
Primary Path State
or
Backup Path State Description
Degraded This path of this disk drive has a state other than Up.
Down The disk volume or disk path is not logically accessible.
Exclusive Exclusive ownership has been declared for this disk volume, and the
disk is not accessible to other users.
Executing
Diagnostics
The processor is performing diagnostics.
Format in Progress A disk-format operation is in progress.
Hard Down The disk volume or disk path was put in this state by the SCF
ABORT DISK command or is physically inaccessible because of a
hardware error.
Inaccessible The disk cannot be accessed.
Not Configured The component is not configured.
Revive A mirrored disk is being updated.
Special Only maintenance-type I/O operations can be performed on the
disk.
Unknown The path state is unknown. The disk might not be responding.
Up The disk volume or disk path is logically accessible.
Bad Sectors Information $DATA14 Primary:
No bad sectors found.