STORAGE SYSTEM AND REPLICATION CREATION METHOD THEREOF
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Abstract
In a storage system having a plurality of control units each connected with a plurality of disk units, it is provided that a replication is created in the volume of the disk units connected to different control units. The replication creation unit of a given control unit creates a replication in the volume of the disk unit connected to other control units in such a manner that the original volume information, the replication volume information in the control unit and information on the other control units are registered as volume pair information. Based on this volume pair information, a replication creation request is transmitted to the other control units.
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Citations
42 Claims
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1-20. -20. (canceled)
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21. A storage system comprising:
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a plurality of protocol converting adapters each adapted to be coupled to a host computer and to convert a protocol of a command received from the host computer; an internal network coupled to the plurality of converting adapters; and a plurality of control units, each coupled to the internal network, and each comprising at least one processor and each controlling to cache data transferred between one of the plurality of protocol converting adapters and the host computer and each executing a Redundant Array of Inexpensive Disks (RAID) control for a plurality of disk units; wherein a first protocol converting adapter of said plurality of protocol converting adapters sends a converted command, of which protocol is converted, to a selected control unit of the plurality of control units, which controls a volume storing data requested by the converted command. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of creating a copy in a storage system coupled to a host computer, comprising the steps of:
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converting a protocol of a command received from the host computer by a plurality of protocol converting adapters; and controlling to cache data transferred between one of the plurality of protocol converting adapters and the host computer by executing a Redundant Array of Inexpensive Disks (RAID) control for a plurality of disk units; wherein a first protocol converting adapter of said plurality of protocol converting adapters sends a converted command, of which protocol is converted, to a selected control unit of the plurality of control units, which controls a volume storing data requested by the converted command. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification