Pure Storage, Inc.
Utilizing integrity information for data retrieval in a vast storage system

Abstract:

A method includes receiving a data retrieval request. A plurality of identifiers are determined in accordance with the data retrieval request. Stored integrity information corresponding to the data retrieval request is received. Desired integrity information is generated based on the plurality of identifiers. The stored integrity information is compared with the desired integrity information. When the stored integrity information compares favorably with the desired integrity information, at least a decode threshold number of encoded data slices of a set of encoded data slices of a plurality of sets of encoded data slices are dispersed storage error decoded.