Minimizing media error disruption of RAID reconstructions

About minimizing media errors

A media error encountered during RAID reconstruction for a single-disk failure might cause a storage system panic or data loss. To minimize the risk of storage system disruption due to media errors, Data ONTAP provides the following features:

Improved handling of media errors by a WAFL repair mechanism. See Handling of media errors during RAID reconstruction.
Default continuous media error scrubbing on storage system disks. See Continuous media scrub.
Continuous monitoring of disk media errors and automatic failing and replacement of disks that exceed system-defined media error thresholds. See Disk media error failure thresholds.