Method for allocating storage area to virtual volume

Details Method for allocating storage area to virtual volume Method for allocating storage area to virtual volume

2007-05-01

2007-05-01

Elmore, Stephen C. (Department: 2185)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S221000, C711S170000, C711S111000, C711S112000, C711S114000

Reexamination Certificate

active

10825158

ABSTRACT:
A system for storing data includes a virtualization apparatus coupled to a computer and to a plurality of storage devices. In response to a request from the computer, the virtualization apparatus issues a notice that a predetermined size of a virtual volume has been allocated to the computer. Upon receiving an access request issued from the computer to the virtual volume, the virtualization apparatus allocates storage areas existing in the plurality of storage devices to the virtual volume, converts the access request received from the computer into an access request addressed to a storage device having the storage devices allocated to the virtual volume, and transmits the converted access request to the storage device.

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