发明名称 |
Dynamic mirror service policy with seek adjustment in a non-physical mirrored storage environment |
摘要 |
A mechanism for adjusting seek activity in a data storage system of physical devices having mirrored logical volumes is presented. Statistics describing at least reading data from the mirrored volumes during successive time periods are collected. From the collected statistics an activity level associated with each of the mirrored logical volumes is determined. Seek activity values for the physical devices are computed based on the activity levels associated with the logical volumes stored on each of the physical devices. The computed seek activity values relate a physical device seek activity to the activity level associated with, and distance between, the mirrored logical volumes residing the physical devices. The computed seek values are used to minimize seek activity for non-mirrored ones of the physical devices.
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申请公布号 |
US6611896(B1) |
申请公布日期 |
2003.08.26 |
申请号 |
US19990382752 |
申请日期 |
1999.08.25 |
申请人 |
EMC CORPORATION |
发明人 |
MASON, JR. ROBERT S.;BACHMAT EITAN;LAM TAO KAI |
分类号 |
G06F3/06;G06F11/20;G06F11/34;G06F12/00;G06F12/16;(IPC1-7):G06F12/00 |
主分类号 |
G06F3/06 |
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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