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System and method to preserve and recover unwritten data present in data cache of a disk subsystem across power outages
System and method to preserve and recover unwritten data present in data cache of a disk subsystem across power outages
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机译:断电时保存和恢复磁盘子系统的数据高速缓存中存在的未写入数据的系统和方法
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摘要
Disclosed are a system and method to preserve and recover unwritten data present in data cache of a disk subsystem across power outages. In one embodiment, a method of a controller is described. The method includes applying a write-back technique between a host server and a data store, accessing a dirty data in a cache memory during a power outage. The method may apply an algorithm for efficiently offloading the dirty data to a non-volatile storage device during the power outage. In addition the method may apply the algorithm to efficiently transfer the dirty data from the non-volatile storage device to the data store when power is restored.
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