Stites & Harbison, PLLC
File server, file management system and file relocation method
In a file server for suppressing power consumption of a storage apparatus, when a file sharing program receives a file access from a client, the program references a mapping table. The program addresses the access to the target file in the volume of a RAID group where the target file is stored. A coupling-request reception program memorizes a coupling time for each user into a coupling history table. A grouping program applies a grouping to users whose coupling time-zones are similar. A data transfer program transfers, into the same RAID group, data of the files associated with the grouped users, thereby collecting the data into the same RAID group. Thus, the time-zone when no access is made to the RAID group (i.e., non-coupling time-zone) can be made longer. Accordingly, a spin-up/down request program makes a spin-down request to the RAID group in the non-coupling time-zone.
Hitachi, Ltd.
G G G Y G
G06F G06F G06F Y02D G06F
inventional inventional additional additional inventional
Hitoshi Shinichi Takahiro Nobuyuki
Kamei Moriwake Nakano Saika