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US 2009/0276594 A1Published application
Storage system
AssigneeHitachi, Ltd.
InventorsTetsuhiko Fujii, Masataka Innan, Hideo Tabuchi
Life of this patent
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Abstract
Provided is a storage system capable of simply and promptly changing the operation of a storage subsystem as a stand-alone system and the operation of a storage subsystem as a virtual storage system. This storage system is able to set a first mode that operates as a stand-alone system and a second mode that operates as a virtual storage system from a management apparatus to each of the multiple storage subsystems.
Claims10
A storage system comprising a plurality of storage subsystems,
- wherein each storage subsystem includes a storage resource and controls the access from a host system to the storage resources of the one or more storage subsystems,
- the storage system comprising:
- a first controller for virtualizing the plurality of storage subsystems logically into one storage subsystem, and executing a first mode of causing the host system to recognize the virtual storage subsystem;
- a second controller for executing a second mode of causing the host system to recognize the plurality of storage subsystems respectively as separate storage subsystems;
- and
- a memory for recording configuration information for setting the first mode or the second mode;
- wherein, when the first mode is set in the memory, the first controller executes the set first mode;
- and
- wherein, when the second mode is set in the memory, the second controller executes the set second mode.
6 more elements
A storage system comprising a plurality of storage subsystems,
- wherein each storage subsystem includes a storage resource and controls the access from a host system to the storage resources of the one or more storage subsystems,
- the storage system comprising:
- a controller for virtualizing the plurality of storage subsystems logically into one storage subsystem, and executing a mode of causing the host system to recognize the virtual storage subsystem;
- and
- a management apparatus for setting configuration information of the plurality of storage subsystems;
- wherein the management apparatus sets virtual information that is common to the plurality of storage system;
- wherein the controller replies to an inquiry command from the host system by sending the virtual information to the host system;
- and
- wherein the host system recognizes the virtual storage subsystem based on the reply.
6 more elements
Dependencies are inferred from the claim text.