Hi Miki, I am using a Dell 2950, and I recently switched from using RAID 5 of all six disks to three RAID 1 pairs with the OS on the first pair, postgres on the second except for pg_xlog, which I moved to the third pair. This configuration change increased the insert performance of my application by 40%. I have not tried RAID 10 so I cannot help you there. My suggestion is test both RAID 5 and RAID 10, and report back to us what you find. Ed
________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Ben-Nes Sent: Thursday, August 16, 2007 1:27 AM To: PostgreSQL Performance Subject: [PERFORM] Integrated perc 5/i Hi I wanted to know if the integrated perc 5/i which come with Dell 2950 will yield maximum performance from RAID 10 ( 15K SAS ). Or should I ask for different card ? I read an old post that shows that RAID 10 does not work eficently under perc 5/i http://groups.google.com/group/pgsql.performance/browse_thread/thread/b8 5926fe6de1f6c2/38837995887b6033?lnk=st&q=perc+5%2Fi+performance&rnum=6&h l=en#38837995887b6033 Does any one have any experience with RAID 10 & perc 5/i ? Thanks, Miki -- -------------------------------------------------- Michael Ben-Nes - Internet Consultant and Director. http://www.epoch.co.il - weaving the Net. Cellular: 054-4848113 --------------------------------------------------
