On Tue, 25 Jan 2005 09:45:45 -0800, Brad Dameron wrote:
I am using a 9500S-12 under SuSe 9.1 32bit. Have not tried the 64bit driver as of yet. But I don't see any issues. But here's a question. What RAID level are you running? I was previously running RAID-5 for all my configurations and have since changed over to a RAID-0 since I back it up.
I did a lot of testing with a LSI MegaRAID 320-2x and 8 15k 73gb SCSI drives in different configs. Under a RAID-5 I would see around 30MB/sec writes and around 250MB reads. Under a RAID-0 I would see 310MB/sec writes and a little over 380MB/sec writes. Now that is one hell of a difference. I am working towards changing over my 3-ware card config as I expect to see the same results.
Brad Dameron SeaTab Software www.seatab.com
The highest performing setup should be Raid 1+ 0 (Striped sets of mirrors). It takes twice as many drives as Raid 0, but you also get the best reliability. ie. a 3-disk Raid 0 should have roughly 3x the r/w perfomance on one drive. a 6-disk Raid 1+0 should have the same write performance as above, but twice the read performance because there are 6 spindles to read from simulataneously. fyi: The faster read performance may not show up in a simple dd type of read test. Greg -- Greg Freemyer