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what's faster? 5400raid or 7200


It depends what the primary usage of the system is for. If it is a typical desktop computer/workstation, a 7200 rpm drive will be more responsive than a 5400 rpm drive of the same generation. However, for A/V applications, the RAID setup will be faster.
 
IDE RAID cards cheet though and use your system CPU for RAID calculations (they are not hardware, but firmware RAID). So you don't get quite the full speed of both drives added together. I think a 5400 RPM RAID would be more consistent in terms of speed than a 7200 RPM drive (which would be faster at the outter edges than the inner tracks.)

It depends what you want to do. I personally wouldn't do an IDE raid, because RAID 0 means TWICE the chance of loosing everything if one drive dies (and you have 2 drives to worry about in RAID 0).

 
7200, i know i tried them both.

Latency is the answer here,7200's will make your whole system feel faster overall.
 
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