Storage virtualization system and method

Details Storage virtualization system and method Storage virtualization system and method

2006-07-25

2009-12-22

Bragdon, Reginald G (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C711S147000

Reexamination Certificate

active

07636818

ABSTRACT:
A shared storage area of a plurality of storage virtualization apparatuses connected to a host apparatus and a storage subsystem stores device configuration information expressing a logical device configuration in the storage virtualization apparatuses. The logical device configuration is a relationship between an external storage device in the storage subsystem, a virtual device serving as a virtualized storage space of a storage resource provided by one or more of the external storage devices, and one or more logical storage devices constituting an internal storage device in the storage virtualization apparatus. A newly connected storage virtualization apparatus reads the device configuration information from the shared storage area, and writes the read device configuration information into a configuration information storage area of the storage virtualization apparatus.

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U.S. Appl. No. 11/140,926

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