Dell PowerVault MD3200 CLI Guide - Page 92

• Media scan enabled • Errors detected during a scan of a user virtual disk are reported to the MEL and handled as: - Unrecovered media error - The physical disk could not read the requested data on its first attempt or on any subsequent retries. For virtual disks with redundancy protection, the data could not be reconstructed from the redundant copy. The error is not corrected but it is reported to the MEL. - Reconstructed media error - The physical disk could not read the requested data on its first attempt or on any subsequent retries. The data is reconstructed from the redundant copy, rewritten to the drive, verified, and the error is reported to the MEL. - Recovered media error - The physical disk could not read the requested data on its first attempt. 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 mismatches - Consistency errors are found, and a media error is forced on the block stripe so 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 two commands to define media scan properties: • set virtualDisks • set storageArray The set virtualDisk command enables a media scan for the virtual disk. The following syntax is the general form of the command: 92 Maintaining a Storage Array