Data ONTAP 7 and earlier
This option enables continuous media scrubbing on the NetApp filer. The default value is on and the syntax to set it is \'
options raid.media_scrub.enable on\'.
The performance impact due to media_scrub is negligible. Continuous media scrubbing substantially reduces the probability of data loss due to media errors found during reconstruction.
Hence, NetApp recommends leaving this option enabled.
For R100, R150 and R200 systems, we recommend that you turn scrubbing off if you encounter repeated drive timeouts and recoveries.