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

Background initialization

Background Initialization (BGI) is an automated process that writes the parity or mirror data on newly created virtual disks. BGI does not run on RAID 0 virtual disks. You can control the BGI rate in the Dell OpenManage storage management application. Any change in the BGI rate does not take effect until the next BGI run.
NOTE:You cannot disable BGI permanently. If you cancel BGI, it automatically restarts within five minutes. For information on stopping BGI, see Stopping Background Initialization.
NOTE:Unlike full or fast initialization of virtual disks, background initialization does not clear data from the physical disks.
NOTE:Consistency Check (CC)/BGI typically causes some loss in performance until the operation completes.

Consistency Check (CC) and BGI perform similar functions in that they 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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