One of the PrimoCache's core components is a storage class filter driver which resides in the storage stack, intercepting I/O requests for data on disk. If requested data is contained in the cache, this request can be served by simply reading the cache, which is comparably faster. Otherwise, the data has to be fetched from disk. Hence, the more requests can be served from the cache the better the overall system performance is.
PrimoCache is a supplementary software caching scheme that cooperates with physical memory, solid-state drives (SSDs) and flash drives to provide data caching for local physical disks. It transparently stores disk data into fast cache devices such as physical memory, so that future read requests for those data will be served directly from the cache and be faster. Thus access time will be reduced, showing a great improvement in overall system performance.
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