Running a Consistency Check With a Media Scan

Recovered	The physical disk could not read the requested data on its first attempt.
media error	The result of this action is that the data is rewritten to the physical disk and
	verified. The error is reported to the MEL.
Consistency	Consistency errors are found, and a media error is forced on the block stripe so
mismatches	that it is found when the physical disk is scanned again. If consistency is
	repaired, this forced media error is removed. The result of this action is that the
	first ten consistency mismatches found on a virtual disk are reported to the
	MEL.
Unfixable error	The data could not be read and consistency information could not be used to
	regenerate it. For example, consistency information cannot be used to
	reconstruct data on a degraded virtual disk. The result of this action is that the
	error is reported to the MEL.

The script command set provides four commands to define media scan properties:

•set virtualDisks

•set storageArray

•set snapGroup

•set snapVirtualDisk

The set virtualDisk command enables a media scan for the virtual disk. The following syntax is the general form of the command:

set (allVirtualDisks virtualDisk

[virtualDiskName] virtualDisks [virtualDiskName1

... virtualDiskNamen] virtualDisk <wwid> mediaScanEnabled=(TRUE FALSE)

The set storageArray command defines how frequently a media scan is run on a storage array. The following syntax is the general form of the command:

set storageArray mediaScanRate=(disabled 1-30)

The set snapVirtualDisk and set snapGroup commands run media scans on physical disks that are members of snapshots and snapshot groups. The following examples show command syntax:

set snapVirtualDisk ["snapvirtualDiskName"] mediaScanEnabled=(TRUE FALSE)

set snapGroup ["snapGroupName"] mediaScanEnabled=(TRUE FALSE)