HP StorageWorks 2000 Series Reference Manual page 199

4. In the Host-Generated I/O & Bandwidth Totals for All Virtual Disks panel, verify
that both indicators display 0 (no activity).
A drive becomes a "leftover" when its metadata identifies the drive as being part of
a nonexistent virtual disk, or when a controller forces the drive offline because it
reported too many errors. SMU reports that the leftover drive is part of virtual disk
Leftover and shows the drive as follows in enclosure view:
Before you can use the drive in a different virtual disk or as a spare, you must clear
the metadata.
To clear metadata from drives, see "Clearing Metadata From Leftover Disk Drives"
on page 136
When a drive fault occurs, basic troubleshooting actions are:
Identify the faulty drive
Review the drive error statistics
Review the event log
Replace the faulty drive
Reconstruct the associated virtual disk
The identification of a faulty disk drive involves confirming the drive fault and
identifying the physical location of the drive.
To confirm a drive fault, use the basic troubleshooting steps in "Determining
Storage System Status and Verifying Faults" on page 197. You can also view the
Monitor > Status > Show Notification page and look for any notifications pertaining
to a disk drive fault.