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Dell PowerEdge RAID Controller 11 User’s Guide PERC H755, H750, H355, and H350 Controller Series

Controller cache preservation

The controller is capable of preserving its cache in the event of a system power outage or improper system shutdown. The PERC 11 series controller is attached to a battery backup unit (BBU) that provides backup power during system power loss to preserve the controller's cache data.


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