发明名称 |
METHOD AND SYSTEM TO MAINTAIN MAXIMUM PERFORMANCE LEVELS IN ALL DISK GROUPS BY USING CONTROLLER VDs FOR BACKGROUND TASKS |
摘要 |
Disclosed is a system and method for performing reconstruction or on-line capacity expansion, background tasks, on a disk group configured on a controller with minimal impact on the other disk groups configured on the same controller. A user is enabled to continuously experience increased performance on all source virtual disks configured on the controller since the DRAM is always dedicated for I/O performance. |
申请公布号 |
US2014195732(A1) |
申请公布日期 |
2014.07.10 |
申请号 |
US201313736149 |
申请日期 |
2013.01.08 |
申请人 |
LSI CORPORATION |
发明人 |
T. Hariharan;Munireddy Madan Mohan |
分类号 |
G06F12/08 |
主分类号 |
G06F12/08 |
代理机构 |
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代理人 |
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主权项 |
1. A method of performing a background operation on a first disk group while at least one other disk group performs normal caching, wherein each of said first and other disk groups comprises cache contents, said method comprising:
determining if there are any write-through Secondary Cache disks configured; if a write-through disk is configured;
invalidating the cache contents of the write-through Secondary Cache disk;dissociating the Secondary Cache write-through disk from a source disk; andusing the write-through Secondary Cache disk for the background function; if a write-through Secondary Cache disk is not configured;
identifying a suitable write-back Secondary Cache disk;flushing the cached contents of the suitable write-back Secondary Cache disk to a respective source disk;dissociating the write-back Secondary Cache disk from the source disk; andusing the write-back Secondary Cache disk for the background operation; and upon completing of the background operation;
restoring Secondary Cache disk cache policies; andreverting any dissociated disks back to being associated with a source disk as originally associated. |
地址 |
Milpitas CA US |