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Best Stripping Size for RAID 0?

K

kozlowbd

n00b
Joined
Jan 9, 2003
Messages
37
What is the best stripping size for RAID 0? I have mine at 128 right now but I think I should have made it smaller.... Is it possible to change it now or do I have to redo everything? Will I notice any gain from switching to a smaller stripping size? This is what I'm getting right now with my 2 wd raptor drives:

1. Random Access Time: 8.5ms
2. Read Burst Speed: 94.8mb/s
3. Read Speed - max: 67.3mb/s
min: 49.3mb/s
avg: 53.1mb/s
4. CPU utilization: 2.1%

Thanks for ANY help!!1!
 
http://www.storagereview.com/guide2000/ref/hdd/perf/raid/concepts/perfStripe.html

Decreasing Stripe Size: As stripe size is decreased, files are broken into smaller and smaller pieces. This increases the number of drives that an average file will use to hold all the blocks containing the data of that file, theoretically increasing transfer performance, but decreasing positioning performance.

Increasing Stripe Size: Increasing the stripe size of the array does the opposite of decreasing it, of course. Fewer drives are required to store files of a given size, so transfer performance decreases. However, if the controller is optimized to allow it, the requirement for fewer drives allows the drives not needed for a particular access to be used for another one, improving positioning performance
 
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