Dell PERC13 and PERC12 User’s Guide PERC H975 Series and PERC H965 Series cards
Consistency checks
Consistency Check (CC) is a background operation that verifies and corrects the mirror or parity data for fault tolerant virtual disks. It is recommended that you periodically run a consistency check on virtual disks. You can manually start a CC using the HII Configuration Utility or the PERC CLI application. To start a CC using the HII Configuration Utility, see Check consistency of VDs.
NOTE:CC or BGI typically causes some loss in performance until the operation completes.
CC and BGI both correct parity errors. However, CC reports data inconsistencies through an event notification, while BGI does not. You can start CC manually, but not BGI.
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