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Tuning the Smart Array

 
Andrea Giorgi
Occasional Contributor

Tuning the Smart Array

Hi all,

I manage a Proliant 350ML (win 2k3) with a Smart Array 6402 with 5 ultra 320 15k disks. Disks are divided into two arrays: a RAID 1 (2 disks, OS files) and a RAID 5 (3 disks, file server and database).

I'd really appreciate if someone taught me how I should choose stripe size for best performance. The average file size is 171 KB for RAID 1 and 202 KB for RAID 5. Moreover, accordignly to network statistic, I/O balance on RAID 5 is about 90% reading and 10% writing.

Thanks in advance,
andrea.