Minimizing media error disruption of RAID reconstructions

About media error disruption prevention

Excessive disk media errors encountered during RAID reconstruction for a single disk failure might cause a filer panic or double disk failure. The following features minimize the risk of filer disruption due to media errors. The features include

Improved handling of media errors by a WAFL repair mechanism. See Handling of media errors during RAID reconstruction.
Default continuous media error scrubbing on filer 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.