A controller for a disk array with parity and sparing includes a non-volatile cache memory and optimizes the destaging process for blocks from the cache memory to both maximize the cache hit ratio and minimize disk utilization. The invention provides a method for organizing the disk array into segments...http://www.google.fr/patents/US5542066?utm_source=gb-gplus-shareBrevet US5542066 - Destaging modified data blocks from cache memory
