System for controlling spinning of disk

Details System for controlling spinning of disk System for controlling spinning of disk

2008-07-22

2008-07-22

Ellis, Kevin L (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

Reexamination Certificate

active

07404035

ABSTRACT:
A system for controlling spinning of a disk is provided to prevent deterioration of the access response speed and to suppress the power consumption. The system includes a controller controlling a file system, and a disk array system storing data of the file system. The disk array system includes a plurality of logical volumes, each of which is configured by at least one disk device, and a disk controller controlling data input/output to/from the plurality of logical volumes. The plurality of logical volumes includes at least one first type logical volume which is controlled so that spinning of a disk device that configures the logical volume can be stopped, and at least one second type logical volume which is controlled so that spinning of a disk device that configures the logical volume cannot be stopped. Data satisfying a predetermined condition is stored in the second type logical volume.

REFERENCES:
patent: 5666538 (1997-09-01), DeNicola
patent: 6826005 (2004-11-01), Hakamata et al.
patent: 7210004 (2007-04-01), Guha et al.
patent: 7210005 (2007-04-01), Guha et al.
patent: 2002/0144057 (2002-10-01), Li et al.
patent: 2004/0054939 (2004-03-01), Guha et al.
“Massive Arrays of Idle Disks for Storage Archives”, Proceedings of the 2002 ACM/IEEE Conference on Supercomputing, D. Colarelli et al, Jul. 26, 2002, pp. 1-11.

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