On Fri, Dec 05, 2008 at 12:24:49PM -0500, Nicolas Roussi wrote: > Hi, I know that this topic is not the main subject matter of this list but I > was wondering if anyone has any experience with RAID adapters and > performance issues. I have already posted something on ubuntuforums.org ( > http://ubuntuforums.org/showthread.php?t=1001858). I would appreciate any > input as to why the read speed on a 3ware 9650 RAID 5 would only be ~3MB/s > and a PERC5 would be 10 times that much. Is there a way to troubleshoot this > or maybe another benchmark for read and write speeds of my arrays?
Raid 5's terrible at a lot of things. RAID5's essentially a huge compromise, and doesn't really do ANYTHING well. See: http://en.wikipedia.org/wiki/RAID5#RAID_5 You'd be far, FAR better off with something like RAID0, or RAID10. You lose half your drive space, but drives are cheap, and the performance gains are huge. Scott -- Scott L. Balneaves | Today's weirdness is tomorrow's reason why. Systems Department | -- Hunter S. Thompson Legal Aid Manitoba | -- edubuntu-users mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
