What hit rate is required for the cache to produce a 50%

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Reference no: EM13158464

One option used to speed up disk drives is to add a cache that hold either recently accessed blocks, blocks waiting to be written to the disk, or that is used to "prefetch" blocks for a file. If the disk speed is approximately 3ms for a block and the time to access a block in the cache is 3 microseconds, what hit rate is required for the cache to produce a 50% speedup (1.5 ms average access time)?

Reference no: EM13158464

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