An improved read ahead strategy that improves the performance of a disk array subsystem. The disk controller keeps track of the last n reads to the array. If a new read request is received that is adjacent to any of the last n reads, the controller performs a look ahead read because a sequential read...http://www.google.de/patents/US5483641?utm_source=gb-gplus-sharePatent US5483641 - System for scheduling readahead operations if new request is within a proximity of N last read requests wherein N is dependent on independent activities
