发明名称 |
Use of activity bins to increase the performance of disk arrays |
摘要 |
A disk array controller reliably improves performance in RAID configurations without the need for a battery backup. Write completion interrupts are queued until a write cache flush has been performed and are then sent to a host system. States of ranges of disk addresses (activity bins) are stored in nonvolatile storage elements associated with the ranges. The states allow rebuild times to be reduced after power failures and drive failures. A range is in a Changing state if at least one of the addresses is the target of a write operation that has been initiated but not completed. The range is in a Stable state if no addresses are the target of an uncompleted write operation. Two additional states are used to identify ranges of disk addresses that have been zeroed or never been written to. The additional states allow substantial reductions in RAID volume creation times.
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申请公布号 |
US6775794(B1) |
申请公布日期 |
2004.08.10 |
申请号 |
US20010863523 |
申请日期 |
2001.05.23 |
申请人 |
APPLIED MICRO CIRCUITS CORPORATION |
发明人 |
HORST ROBERT W.;THERENE CHRISTOPHE |
分类号 |
G06F11/00;G06F11/10;H04L1/22;(IPC1-7):G06F11/00 |
主分类号 |
G06F11/00 |
代理机构 |
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代理人 |
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地址 |
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