Quote Originally Posted by 'Sam DeathWalker',index.php?page=Thread&postID=177316#p ost177316
Quote Originally Posted by 'combhua',index.php?page=Thread&postID=177251#post 177251
it makes sense that finding a file split over 2 drives (2 seeks) takes a longer amount of time than the same file on 1 drive (1 seek)
They both seek at the same time. Raid0 doubles transfer rate (with 2 drives) but does not impove access time, but should not make it worse ... unless the seek times are not sycronized for some reason.
Short answer: The slower seek will make any faster seeks wait anyway. So your effective times are now always the worst of the two.


Long answer
Well, this may be more abstract than you care to know. Say average seek times are 0.100 seconds. So over the course of many seeks, the average should be 0.100. This implies that there are some seeks which took longer than 0.100 seconds and some which were faster. Still with me?

So it's just as likely that a seek taking 0.070 seconds on one drive, takes 0.130 seconds on the other. Well, the effective seek is now 0.130 seconds, even if the first drive did it in 0.001 seconds.