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RAID 0 striping = faster TS peformance?



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I asked the list about RAID a while back, but I missed the consensus on 
whether RAID 0 (Striping) actually translates into faster performance on a 
machine collecting real-time data and displaying lots of open workspaces 
with real-times studies, using TS4.  The following comment from a web site 
leaves a question mark in my mind:

"I'd like to draw some conclusions regarding RAID itself.  RAID 0 is an 
excellent way to improve transfer rates and read and write speed. However, 
RAID 0 cannot lower seek and access times, which is something to consider 
before going the RAID 0 route. For heavy use of standard office 
applications or gaming, the best buy is a single drive with faster access. 
For other apps such as CAD or video editing, etc., then RAID 0 may be just 
the thing."

What does this mean to the trader I ask myself?!  Can someone tell me 
definitively, either:

a)  Yes, RAID 0 (striping) makes for much faster TS4 performance (and I 
recommend using X number of hard drives) ....or,
b)  No, it hardly makes any difference - stick to a single hard drive

Many thanks in advance,
Simon