> Joshua Baker-LePain wrote: > I seem to have maxed out at approximately 275mb/sec on writes and about > 200mb/sec on reads with the following configuration: > > Dual opteron 275's > 2gb RAM (4 x 512mb) > 3Ware 9550SX w/8 ports > 8 x 750gig barracudas (RAID 0) > 2 x 80gig seagates for the OS > ncq off > 9550 set to "performance" rather than "balanced" on the storsave or > whatever that parameter was called > ext3 file system with "blockdev --setra 16384" <-- great find! > CentOS 4.4 64-bit > > I'm too chicken/paranoid/etc to fiddle with XFS since I'm cpu bound most > of the time (encoding/fondling uncompressed video). At some point, I'll > switch the array over to RAID5 so there is some sort of safety net, but > right now I'm working with play data so it doesn't really matter. 3Ware's site seems to point to 300+MB/Sec with 8 disks so it sounds like you're close. Read speed seems low. As I said, enabling memory interleaving on my motherboard and setting the drives to 3GB/Sec made a big difference. 8x750 Gig! I still remember when a friend bought his first 512MB drive and I asked him what he was going to do with all that space! Of course that was long before any thought of video on a PC... Kirk BOcek