Power-saving-backup management method

Details Power-saving-backup management method Power-saving-backup management method

2008-10-08

2011-12-13

Yu, Jae (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S114000, C711S161000, C714S006100, C714S006230

Reexamination Certificate

active

08078815

ABSTRACT:
A storage subsystem includes: a controller; a first logical storage area corresponding to a RAID group configured by a plurality of storage devices; and a second logical storage area corresponding to a plurality of the RAID groups each configured by the plurality of storage devices, and storing a copy of data stored in the first logical storage area. In the storage subsystem, the first and second logical storage areas form a copy group, and for starting copying from the first to second logical storage area, the controller performs a mode change, from a power saving mode to a ready mode, to the plurality of storage devices configuring the plurality of RAID groups corresponding to the second logical storage area. With such a storage subsystem, the time can be reduced for activating copy-destination storage devices to which a power saving function is applied, and the copy time is thus favorably reduced.

REFERENCES:
patent: 2002/0120811 (2002-08-01), Maeda
patent: 2006/0164506 (2006-07-01), Kitao
patent: 2006-187993 (2006-07-01), None

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