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System method and circuit for retrieving into cache data from one or more mass data storage devices
System method and circuit for retrieving into cache data from one or more mass data storage devices
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机译:用于从一个或多个海量数据存储设备检索缓存数据的系统方法和电路
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摘要
According to some embodiments of the present invention, a data storage system may include a plurality of controllers connected or otherwise associated with one or more mass data storage devices. One controller may signal to one or more other controllers an indication as for which data blocks it has received requests. A prefetch decision module on a controller may decide to prefetch some or all of the data blocks associated with a given logical data unit based on data block requests it has received and based on requests received by other controllers. A prefetch decision module on a first controller may signal one or more other controllers to prefetch one or more data blocks associated with a given logical unit and which reside on mass storage devices either connected or otherwise associated with each of the one or more controllers.
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