发明名称 |
Disk array apparatus and disk array apparatus controlling method |
摘要 |
Times at which requests for a data read or data write from/to a logical volume are received are stored in memory as access times of a RAID group making up the logical volume. When a predetermined time has elapsed after the access time, a number of the hard disk drives according to the redundancy of the RAID group are set to a power saving mode. Assume there are first hard disk drives and second hard disk drives having shorter lifes and the RAID group exceeds a predetermined time after the access time. When the RAID group consists of only the first drives, a number of the first drives according to the redundancy of the RAID group are set to a power saving mode and when it consists of only the second drives, an arbitrary number of second drives are set to a power saving mode.
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申请公布号 |
US8402211(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US20070892622 |
申请日期 |
2007.08.24 |
申请人 |
YAMAZAKI TAKASHI;HAKAMATA KAZUO;KANO AZUMA;HITACHI, LTD. |
发明人 |
YAMAZAKI TAKASHI;HAKAMATA KAZUO;KANO AZUMA |
分类号 |
G06F1/32;G06F12/00;G06F1/26;G06F3/06;G11B19/00;G11B19/02 |
主分类号 |
G06F1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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