Patent attributes
A system and method having accelerated data recovery in a clustered storage system is provided. The method may include generating an extent map of data having an original order, wherein the extent map associates the original order with a stored order of the data in a plurality of storage units coupled to a server node. After receipt of a request for data recovery of a subset of data, the method may further include optimizing data retrieval of the data to a minimum recovery time using the extent map. For static optimization, the server node can generate a second map indicating the stored order of each fragment of data to be sent prior to the data. Alternatively in dynamic optimization, the server node can send a qualifying identifier with each fragment indicating the storage location. Thereby, the client node is enabled to rearrange the data upon receipt to its original order.
