DEDUPE AS AN INFRASTRUCTURE TO AVOID DATA MOVEMENT FOR SNAPSHOT COPY-ON-WRITES

DEDUPE AS AN INFRASTRUCTURE TO AVOID DATA MOVEMENT FOR SNAPSHOT COPY-ON-WRITES

A method for a storage system reduces data movement for snapshot copy-on-write operations. The method includes providing a live volume having snapshot chunks. Each snapshot chunk includes a number of deduplication chunks. Each deduplication chunk is mapped to a disk chunk on a disk. The method inclu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAUSHIK V., Shyam, LYAKAS, Alex
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A method for a storage system reduces data movement for snapshot copy-on-write operations. The method includes providing a live volume having snapshot chunks. Each snapshot chunk includes a number of deduplication chunks. Each deduplication chunk is mapped to a disk chunk on a disk. The method includes creating a snapshot of the live volume and, for each host write to a snapshot chunk of the live volume that shares a set of disk chunks with a snapshot, performing a snapshot copy-on-write operation by a using a deduplication operation.