Storage system and ownership transfer method

Details Storage system and ownership transfer method Storage system and ownership transfer method

2008-08-15

2010-11-09

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Concurrent input/output processing and data transfer

C710S020000, C710S036000, C710S037000

Reexamination Certificate

active

07831744

ABSTRACT:
A storage system that includes: a plurality of microprocessors; a plurality of storage areas to be formed to a drive group; an assignment section that assigns, to each of the microprocessors, an ownership of accessing any of the storage areas; a management section that manages, as an operating ratio, a proportion of a time to be taken for each of the microprocessors to execute a request issued to each of the storage areas; a search section that searches, for transferring the ownership assigned to an arbitrary one of the microprocessors to any of the another microprocessor determined based on the operating ratio, one or more of the storage areas under the ownership of the arbitrary microprocessor for a transfer-target storage area; and a transfer section that transfers, to the another microprocessor, the ownership of the transfer-target storage area that is assigned to the arbitrary microprocessor. The resulting storage system can make full use of the performance capabilities of a storage device, and an ownership transfer method can be provided.

REFERENCES:
patent: 6675268 (2004-01-01), DeKoning et al.
patent: 2005/0210188 (2005-09-01), Mizuno et al.
patent: 2005-267545 (2005-09-01), None
patent: 2007-113449 (2007-05-01), None
U.S. Appl. No. 12/018,818, filed Jan. 24, 2008, Serizawa.

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