Asymetrical device distribution for a partitioned storage...

Details Asymetrical device distribution for a partitioned storage... Asymetrical device distribution for a partitioned storage...

2011-06-28

2011-06-28

Gu, Shawn X (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S117000, C711S141000, C711S156000, C711S170000

Reexamination Certificate

active

07970992

ABSTRACT:
A partitioned storage subsystem includes a plurality of directors, each having at least one processor thereon, each of the directors acting as one of: a primary director and a secondary director for a subset of logical devices handled by the partitioned storage subsystem, where primary directors actively perform I/O operations for logical devices and wherein secondary directors receive data to mirror memory of a corresponding primary director. The partitioned storage subsystem also includes a global memory distributed among the plurality of directors, where a different portion of the global memory is provided on each of the directors, and includes metadata for the logical devices, provided in the global memory, where the metadata contains information that correlates logical device data with physical device data. The physical device data may be provided by at least one disk drive coupled to at least one of the directors.

REFERENCES:
patent: 5206939 (1993-04-01), Yanai et al.
patent: 5778394 (1998-07-01), Galtzur et al.
patent: 5845147 (1998-12-01), Vishlitzky et al.
patent: 5857208 (1999-01-01), Ofek
patent: 6148377 (2000-11-01), Carter et al.
patent: 2007/0180188 (2007-08-01), Fujibayashi et al.

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