Connecting device of storage device and computer system including the same connecting device
First Claim
1. A switch device comprising:
- a first interface to be coupled to a host computer via network;
a plurality of virtual volumes to be provided for the host computer, wherein a first virtual volume corresponds to at least one of said virtual volumes;
a second interface to be coupled to a plurality of storage systems including data volumes for storing data from the host computer via the virtual volume;
a processor coupled to the first interface and the second interface;
a memory coupled to the processor, wherein the processor receives, through the first interface a first instruction including a virtual volume identifier from the host computer, identifies at least one of data volumes corresponding to the virtual volume specified by the virtual volume identifier, and sends, through the second interface, at least one of a second instruction to at least one of the data volumes according to the first storage system and to the second storage system, and wherein the second instruction is based on a protocol to be executed by the storage system to which the at least one of the data volumes corresponding to the virtual volume belongs.
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Abstract
In an environment in which plural external storage devices having different function control interfaces are intermixed, when a function of a storage device is controlled from a computer, a common interface for controlling the function of the storage device is provided. A device that provides the common interface manages an interrelationship between a storage area recognized by a host computer and a storage area provided by the storage device and associates a storage area which becomes a target of a function control instruction with the storage device that provides the storage area. A type of the storage device that provides the storage area which becomes the target of the function control instruction is identified and function control is ordered through a function control interface unique to the device.
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Citations
12 Claims
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1. A switch device comprising:
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a first interface to be coupled to a host computer via network;
a plurality of virtual volumes to be provided for the host computer, wherein a first virtual volume corresponds to at least one of said virtual volumes;
a second interface to be coupled to a plurality of storage systems including data volumes for storing data from the host computer via the virtual volume;
a processor coupled to the first interface and the second interface;
a memory coupled to the processor, wherein the processor receives, through the first interface a first instruction including a virtual volume identifier from the host computer, identifies at least one of data volumes corresponding to the virtual volume specified by the virtual volume identifier, and sends, through the second interface, at least one of a second instruction to at least one of the data volumes according to the first storage system and to the second storage system, and wherein the second instruction is based on a protocol to be executed by the storage system to which the at least one of the data volumes corresponding to the virtual volume belongs. - View Dependent Claims (2, 3, 4)
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5. A switch device comprising:
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a host network interface to be coupled to host computers via networks;
a storage network interface to be coupled to a first storage system which controls based on a first protocol and which has a first data volume storing data from a host computer and a second storage system which controls based on a second protocol and which has a second data volume storing data from a host computer;
a processor coupled to the host network interface and the storage network interface;
a memory coupled to the processor; and
a plurality of first virtual volumes corresponding to at least one of the first data volumes and the second virtual volumes are corresponding to at least one of the second data volumes, the first virtual volume and the second virtual volume to be provided for at least one of the host computers, wherein when a virtual volume specialized by the virtual volume identifier in the instruction is the first virtual volume corresponding to the first data volume, the processor sends a first control information related to the first data volume according to the first protocol for the first storage system, wherein when a virtual volume specified by the virtual volume identifier in the instruction is the second virtual volume corresponding to the second data volume, the processor sends, through the storage network interface, a second control information related to the second data volume according to the second protocol for the second storage system. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification