David Magda dmagda at
Sat May 14 08:33:35 PDT 2005

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 

The following two may also be of some interest:

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