Raid Settings

[rdfdr78]

I have 2 x 3 ware 9500s-mi12 controllers, 2 X raid 50 6 seagate 400GB drives in each raid 50, intel se7520af2 board, Dual 3ghx Xeon 800FSB. Its a backup server, i`m wanting to know what should my stripe size be setup as when configuring RAID 64k 128k 256k, does it make that much diffrence in performance?

Thanks Richard

 

[technome]

Generally the default stripe size is the optimal size for a general use file server.

If you have a speciialized file server as in..
Exchange
A server array dedicated to a database
A server array which has predominently one size file, particularly smaller or larger than 64k. Eg An array set on which 90&% of the files are forms, 6k in size.

Then, you may get higher throughput or transations by changing the stripe size. Database arrays would be the most to benefit from a stripe size change.

Personally I have changed the stripe size on general use servers multiple times for testing purposes, the default produces the best throughput. You should be more concerned with creating a scheduled task to cleanup temp files, having a good automated defrag program and a bi weekly scheduled consistency check.



........................................
Chernobyl disaster..a must see pictorial

http://www.kiddofspeed.com/default.htm

 

[rdfdr78]

Thank`s for your help, i will keep to the standard stripe size.

Richard