Verifying A Vdisk; Scrubbing A Vdisk - HP P2000 G3 Reference Manual

To expand a vdisk
1. In the Configuration View panel, right-click a vdisk and select Tools > Expand Vdisk. Information
appears about the selected vdisk and all disks in the system.
• In the Disk Selection Sets table, the number of white slots in the vdisk's Disks field shows how many
disks you can add to the vdisk.
• In the enclosure view or list, only suitable available disks are selectable.
2. Select disks to add.
3. Click Expand Vdisk. A processing dialog appears.
4. Click OK. The expansion's progress is shown in the View > Overview panel.

Verifying a vdisk

If you suspect that a redundant (mirror or parity) vdisk has a problem, you can run the Verify utility to check
the vdisk's integrity. For example, if the storage system was operating outside the normal temperature
range, you might want to verify its vdisks. The Verify utility checks whether the redundancy data in the
vdisk is consistent with the user data in the vdisk. For RAID 3, 5, 6, and 50, the utility checks all parity
blocks to find data-parity mismatches. For RAID 1 and 10, the utility compares the primary and secondary
disks to find data inconsistencies.
Verification can last over an hour, depending on the size of the vdisk, the utility priority, and the amount of
I/O activity. When verification is complete, the number of inconsistencies found is reported with event
code 21 in the event log. Such inconsistencies can indicate that a disk in the vdisk is going bad. For
information about identifying a failing disk, use the SMART option (see
You can use a vdisk while it is being verified.
If too many utilities are running for verification to start, either wait until those utilities have completed and
try again, or abort a utility to free system resources. If you abort verification, you cannot resume it; you
must start it over.
To verify a vdisk
1. In the Configuration View panel, right-click a redundant vdisk and select Tools > Verify Vdisk.
2. Click Start Verify Utility. A message confirms that verification has started.
3. Click OK. The panel shows the verification's progress.
To abort vdisk verification
1. In the Configuration View panel, right-click a redundant vdisk and select Tools > Verify Vdisk.
2. Click Abort Verify Utility. A message confirms that verification has been aborted.
3. Click OK.

Scrubbing a vdisk

The system-level Vdisk Scrub option (see
automatically checks all vdisks for disk defects. If this option is disabled, you can still perform a scrub on a
selected vdisk.
The scrub utility analyzes a vdisk to detect, report, and store information about disk defects. Vdisk-level
errors reported include: hard errors, media errors, and bad block replacements (BBRs). Disk-level errors
reported include: metadata read errors, SMART events during scrub, bad blocks during scrub, and new
disk defects during scrub. For RAID 3, 5, 6, and 50, the utility checks all parity blocks to find data-parity
mismatches. For RAID 1 and 10, the utility compares the primary and secondary disks to find data
inconsistencies. For NRAID and RAID 0, the utility checks for media errors. This utility does not fix defects.
You can use a vdisk while it is being scrubbed. A scrub can last over an hour, depending on the size of the
vdisk, the utility priority, and the amount of I/O activity. However, a "foreground" scrub performed by
Media Scrub Vdisk is typically faster than a background scrub performed by Vdisk Scrub.
When a scrub is complete, an event with code 207 is logged that specifies whether errors were found. For
details, see the Event Descriptions Reference Guide.
Configuring background scrub for vdisks
HP StorageWorks P2000 G3 MSA System SMU Reference Guide
Configuring SMART on page 49).
on page 53)
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