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Dell PowerEdge RAID Controller 9 User’s Guide H330, H730, and H830

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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 Dell OpenManage storage management application. You can schedule a CC to run on virtual disks using the Dell OpenManage storage management application. To start a CC using the HII Configuration Utility, see Checking Data Consistency .

NOTE:CC/BGI typically causes some loss in performance until the operation completes.

Consistency Check (CC) and BGI both correct parity errors. However, CC reports data inconsistencies through an event notification, but BGI does not. You can start CC manually, but not BGI.

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