System Memory is allocated for Cache from the Memory tab on the Properties screen for the array. Right click on the array icon and select Properties. The cache is enabled on the Cache tab. To change the memory allocated, you need to disable the cache on the Cache tab, apply, then on the Memory tab, you must zero out the memory for both Read and Write, then allocate the memory to use all available. Always assign as much memory to Write cache as possible, leaving about 150MB (if possible) for Read.

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