Pure Storage, Inc.
OFFLOADING RAID RECONSTRUCTION TO A SECONDARY CONTROLLER OF A STORAGE SYSTEM

Abstract:

A secondary controller receives, from a central storage controller, a command comprising information associated with a RAID rebuild operation to reconstruct data stored at a storage system. In response to receiving the information associated with the RAID rebuild operation, the secondary controller transmits a request to a set of storage devices of the storage system for other data and parity data associated with the data to be reconstructed and receives the other data and the parity data from the set of storage devices. The secondary controller reconstructs the data based on the other data, the parity data, and the information associated with the RAID rebuild operation.