STORAGE SYSTEM HAVING POWER SAVING FUNCTION

PROBLEM TO BE SOLVED: To reduce the frequency with which a power saving state of physical storage devices is canceled, not only in a storage system in the NAS (Network Attached Storage) field, but also in a storage system other than the NAS field. SOLUTION: A controller of a storage system associate...

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Bibliographic Details
Main Authors HORIUCHI KENJI, YANAGI NAOTO, YANAGAWA AKIFUMI
Format Patent
LanguageEnglish
Published 02.06.2011
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To reduce the frequency with which a power saving state of physical storage devices is canceled, not only in a storage system in the NAS (Network Attached Storage) field, but also in a storage system other than the NAS field. SOLUTION: A controller of a storage system associates a portion of the logical area of logical storage devices with one or more pool areas of a pool. The frequency of I/O (Input/Output) of any of the portion of the logical areas is higher than the I/O frequency of the remaining logical areas of the logical storage devices. In the event of I/O, if a first physical storage device group which forms the basis of the physical storage devices is in a power saving state, then the controller performs I/O of a data element to/from the pool area corresponding to the logical area of the I/O destination, without canceling the power saving state of the first physical storage device group. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090260616