发明名称 |
Disk array system and its control method |
摘要 |
In a disk array system of RAID (level 5) improving the system performance by distributing data, duplicated fields are allocated in a parity group in order to reduce an overhead of data write. In the data write process, write data is tentatively and duplicately written in the duplicate fields. At this time, a write completion is reported to the CPU. The parity is generated later at a proper timing and written in a SCSI drive. Generating a parity and writing data can be efficiently scheduled. |
申请公布号 |
US5579474(A) |
申请公布日期 |
1996.11.26 |
申请号 |
US19940248452 |
申请日期 |
1994.05.24 |
申请人 |
HITACHI, LTD. |
发明人 |
KAKUTA, HITOSHI;TAKAMOTO, YOSHIFUMI |
分类号 |
G06F11/10;G11C29/00;(IPC1-7):G06F11/34 |
主分类号 |
G06F11/10 |
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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