IO REDIRECTION METHODS WITH COST ESTIMATION

IO REDIRECTION METHODS WITH COST ESTIMATION

A distributed storage system node (125, 130, 135) is disclosed. The distributed storage system node (125, 130, 135) may include at least one storage device (140, 145, 150, 155, 160, 165, 225, 230), which may act as the primary replica (2315) for data subject to an Input/Output (I/O) request (905). A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HUO Jianjian, SINHA Vikas K, YAGATY Ajit, MARRIPUDI Gunneswara Rao
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Zusammenfassung:A distributed storage system node (125, 130, 135) is disclosed. The distributed storage system node (125, 130, 135) may include at least one storage device (140, 145, 150, 155, 160, 165, 225, 230), which may act as the primary replica (2315) for data subject to an Input/Output (I/O) request (905). A cost analyzer (2310) may calculate a local estimated time required (3305) to complete the I/O request (905) at the primary replica, and a remote estimated time required (3710) to complete the I/O request (905) at a secondary replica (2320, 2325) of the data. An I/O redirector (215) may direct the I/O request (905) to either the primary replica (2315) or the secondary replica (2320, 2325) based on the local estimated time required (3305) and the one remote estimated time required (3710).