Dell PowerEdge RAID Controller 12 User’s Guide PERC H965i Adapter, PERC H965i Front, PERC H965i MX, and PERC H965e Adapter

The Replace Member functionality enables a previously commissioned hot-spare to revert to a usable hot-spare. When a disk failure occurs within a virtual disk, an assigned hot-spare—dedicated or global—is commissioned and begins rebuilding until the virtual disk is optimal. After the failed disk is replaced in the same slot and the rebuild to the hot-spare is complete, the controller automatically starts to copy data from the commissioned hot spare to the newly inserted disk. After the data is copied, the new disk is a part of the virtual disk and the hot-spare is reverted to being a ready hot-spare. This allows hot-spares to remain in specific enclosure slots. While the controller is reverting the hot-spare, the virtual disk remains optimal. The controller automatically reverts a hot-spare only if the failed disk is replaced with a new disk in the same slot. If the new disk is not placed in the same slot, a Manual Replace Member operation can be used to revert a previously commissioned hot-spare.