Patent ID: 8225006
Filing Date: 2012-07-17
Classification: G06F

Abstract:
1. A method for data redundancy across three or more storage devices, the method comprising: storing a collection of data chunks as a plurality of N-1 data stripes across N storage devices where N is three or more, wherein each data chunk of up to N data chunks forming a data stripe is stored in a different storage device; storing a parity stripe across the N storage devices including N-1 data parity chunks and one meta data parity chunk; wherein each Kth storage device of N-1 storage devices stores a Kth data parity chunk of the N-1 data parity chunks computed as parity of up to N data chunks forming the Kth data stripe; and wherein an Nth storage device of the N storage devices stores the meta parity chunk computed as parity of the N-1 data parity chunks stored in the respective N-1 storage devices.