Utilizing unmapped and unknown states in a replicated storage system
AssigneePure Storage, Inc.
InventorsChristopher Golden, John Colgrove, Ethan L. Miller, Malcolm Sharpe, Steve Hodgson
Life of this patent
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AssigneePure Storage, Inc.
InventorsChristopher Golden, John Colgrove, Ethan L. Miller, Malcolm Sharpe, Steve Hodgson
Estimating the term…
A system and method for utilizing unmapped and unknown states in a storage system. When a first portion of a first medium is determined to be unreachable from any other mediums, the first portion of the first medium may be put into an unmapped state, and its data may be discarded and the corresponding storage locations may be freed. During replication of the first medium to a replica storage array, the state of the first portion of the first medium may be translated from the unmapped state into an unknown state on the replica storage array. If another storage array has the data of the first portion of the first medium, this data may be used to overwrite the first portion of the first medium on the replica storage array, converting the first portion of the first medium from the unknown state into the mapped state.
A system comprising:
A method comprising:
A non-transitory computer readable storage medium storing program instructions, wherein the program instructions are executable by a processor to:
Dependencies are inferred from the claim text.