发明名称 |
Disk array device and method for controlling the same |
摘要 |
The disk array device includes a disk control device (20) connected to a central processing unit (10) and a plurality of disk drives (300) composing disk arrays under the control of said disk control device (20). The disk control device (20) includes a redundant data generator (130), a difference data generator (140), and a redundant data generation method selecting function (37). The disk array device selects a proper redundant data generating method from a method of read and modify and a method of all stripes, both of which are executed to generate redundant data by the disk control device (20) according to an access pattern from a host, a load state of the disk drive (300), and a failure. <IMAGE> |
申请公布号 |
EP0844561(A3) |
申请公布日期 |
2004.01.28 |
申请号 |
EP19970120114 |
申请日期 |
1997.11.17 |
申请人 |
HITACHI, LTD. |
发明人 |
KATSURAGI, EIJU;OGATA, MIKITO;KURANO, AKIRA;TAMIYA, TOSHIHIKO;YAMAMOTO, AKIRA;TAKAHASHI, NAOYA |
分类号 |
G06F12/16;G06F3/06;G06F11/00;G06F11/10;G06F12/00;G11B20/18 |
主分类号 |
G06F12/16 |
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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