On May 14, 2005, at 09:16, Pawel Jakub Dawidek wrote:
This is the way RAID1 works. Try to imagine how disk's heads are moving -
there will be no speed-up in sequential reads, this is not RAID0.
Mirror characteristics are: - the same speed for sequential reads as for one disk; - the same speed for sequential/random write as for one disk; - double speed of one disk for random reads;
The following paper describes the I/O characteristics of various RAID schemes:
http://citeseer.ist.psu.edu/chen89evaluation.html
The following two may also be of some interest:
http://citeseer.ist.psu.edu/chen90maximizing.html http://citeseer.ist.psu.edu/219910.html
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