Load equalizing storage controller and control method for...

Details Load equalizing storage controller and control method for... Load equalizing storage controller and control method for...

2011-01-04

2011-01-04

Rutz, Jared I (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C709S217000

Reexamination Certificate

active

07865676

ABSTRACT:
An object of the invention is to provide a storage controller and control method that can efficiently and easily prevent reduced data I/O processing performance due to an imbalance between loads on controllers. In the storage controller and control method for providing, to a host computer, logical volumes created in a storage area provided by a storage device and controlling data I/O to/from the logical volumes, the state of loads on the control units for controlling data I/O to/from the logical volumes is monitored, and a control unit allocated to a logical volume is changed to another control unit to equalize loads on the control units.

REFERENCES:
patent: 2006/0129784 (2006-06-01), Nakayama et al.
patent: 2006/0179122 (2006-08-01), Ido et al.
patent: 2007/0094357 (2007-04-01), Sugitani et al.
patent: 2008/0127198 (2008-05-01), Cometto et al.
patent: 9-1469842 (1997-06-01), None
patent: 11-312058 (1999-11-01), None

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