HP NonStop G-Series - Manual (Page 99)

Stop Disk
Terminates all paths for this disk drive. When the Stop action finishes, the paths are in a Down state.
If the disk drive is currently in use, a dialog box warns you and asks whether or not you want to
continue with the action.
Stop Primary Path
Terminates the primary path to the disk. When the Stop action finishes, the path is in a Down state. If
the disk drive is currently in use, a dialog box warns you and asks whether or not you want to
continue with the action.
Stop Volume
Terminates all paths for the primary and mirror drives of this volume. When the Stop action finishes,
the paths are in a Down state.
Switch to Backup Path
Switches processing from the primary to the backup path.
Switch to Primary Path
Switches processing from the backup to the primary path.
Test Verify
Runs the power-on self-test for the disk and tests the internal circuitry of the drive.
Validate Checksum
Scans the user data area of a disk for sector checksum errors. If the action fails, the Action Details
dialog box reports a sector checksum error and suggests that you spare the sector only if you believe
there is a drive media problem.
For additional information, use the OSM Event Viewer. Retrieve events using $ZLOG as the source
criteria and RAL as the subsystem criteria, and look for Disk-sector-failure events (event number
7001). In the event detail, a Sector-failure-count token shows how many sector checksum errors were
found, and a Disk-logical-sector token appears for each error, providing the logical address of that
failing sector.
You can perform the Validate Checksum action while the disk drive is in use. You can use the Abort
Action button to cancel this action.
External Disk Collection
When one or more external disks are connected to a system, an External Disk Collection object
appears in both the tree pane and the overview pane of the OSM Service Connection. In both panes,
this object displays an alarm or yellow icon if alarms or degraded conditions exist on any of the