| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a data storage system for which a sufficient energy saving measure is taken. <P>SOLUTION: A user registration table 121 in which an identification code, a password and a belonging group about each user are registered and a schedule table 123 in which a use period of time about each group is set are preset, and an allocation table 122 that shows which data storage units S001 to S004 are allocated to which group is created on the basis of the set contents. Access from the user is authenticated by an access authenticating part 115, a file is stored in a specific storage unit designated by the allocation table 122, and when required, the file is also extracted. A switch processing part 114 switches each of the storage units S001 to S004 to an operation mode for a use period of time set for an allocation target group, and switches them to a standby mode having little power consumption for the other period of times. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
