Double degraded array protection in an integrated network attached storage device

In one embodiment, the invention provides a method for accessing a physical storage-device array comprising a plurality of storage devices. The method includes (1) obtaining at least one parameter from a profile selected from two or more profiles concurrently defining two or more virtual arrays, eac...

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Bibliographische Detailangaben
Hauptverfasser: ZHAO XING, BYRNE RICHARD J, PENG YUN, GOH EU GENE, TJANDRA SILVESTER, HE ZHI PING, HEINTZE NEVIN C
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In one embodiment, the invention provides a method for accessing a physical storage-device array comprising a plurality of storage devices. The method includes (1) obtaining at least one parameter from a profile selected from two or more profiles concurrently defining two or more virtual arrays, each profile defining (i) a different virtual array associated with a corresponding set of storage devices and (ii) a parameter set of one or more parameters used for accessing the virtual array; and (2) generating an instruction, based on the at least one parameter, for accessing, or disallowing access to, information in the virtual array defined by the selected profile, wherein a parameter in each the parameter set defined by each profile indicates whether two or more storage devices in the corresponding virtual array are degraded.