Virtualized volume snapshot formation method
First Claim
1. A control method for a computer system having at least one storage device, at least one control device providing at least one storage region of the storage device, and a computer for managing information for providing a virtualized storage region, comprising steps of:
- adding correspondence information between the storage region provided by the storage device and the virtualized storage region, to the information for providing the virtualized storage region of the computer; and
holding the correspondence information of the computer entirely or partially in the control device to control the storage device.
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Accused Products
Abstract
A server has management information including correspondence information between a physical storage region and a virtualized storage region, so as to provide a virtualized storage region. The server includes a unit for using the management information to provide a virtualized storage region to another host and a unit for instructing the control of the storage regions based on the virtualized storage region to a controller for a storage device for providing the physical storage region. Moreover, the controller includes a unit having whole or a part of management information including the correspondence information and performing the control of the storage device based on the virtualized storage region in response to the instruction.
85 Citations
9 Claims
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1. A control method for a computer system having at least one storage device, at least one control device providing at least one storage region of the storage device, and a computer for managing information for providing a virtualized storage region, comprising steps of:
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adding correspondence information between the storage region provided by the storage device and the virtualized storage region, to the information for providing the virtualized storage region of the computer; and
holding the correspondence information of the computer entirely or partially in the control device to control the storage device. - View Dependent Claims (2, 3, 4, 5)
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6. A computer system comprising:
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at least one storage device;
at least one control device providing at least one storage region of the storage device; and
a computer for managing information for providing a virtualized storage region, wherein the information for providing the virtualized storage region of the computer includes correspondence information between the storage region provided by the storage device and the virtualized storage region, and the control device includes control means for holding the correspondence information of the computer entirely or partially and controlling the storage device.
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7. A storage device control method in a computer system having at least one storage device, at least one control device providing at least one storage region of the storage device, and a computer for managing information for providing a virtualized storage region, comprising steps of:
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adding correspondence information between the storage region provided by the storage device and the virtualized storage region, to the information for providing the virtualized storage region of the computer; and
holding the correspondence information of the computer entirely or partially in the control device to control the storage device. - View Dependent Claims (8)
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9. A storage device for use in a computer system comprising:
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at least one storage device;
at least one control device providing at least one storage region of the storage device; and
a computer for managing information for providing a virtualized storage region, wherein said storage device includes means for controlling a replica formation of a storage region by an instruction for controlling the replica formation to be performed based on the virtualized storage region, from the control device holding entire or a part of correspondence information between the storage region provided by the storage device and the virtualized storage region.
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Specification