On Mon, Nov 25, 2002 at 11:43:56AM +0100, Sander Steffann wrote: > > (mirroring). A hardware RAID controller is faster than > > software RAID. > lot faster than hardware RAID in many cases. I prefer hardware RAID myself > because of the simplicity (the OS doesn't need to know about the RAID > configuration), but I hear good results from people running on software > RAID.
yes, hw raid is simply, but it's slow. i've tested it many brand machine. ibm serveraid card w/ raid5 is about HALF speed than sw raid. according to bonnie++, debian, 2.4.19+grsec kernel. the machine ibm xseries 255, 2 xeon mp cpus, 4x18G 10k rpm disk. the bonnie tested with 6G files, 1.5G physical ram and 1G swap. if somebody needs those results, i can send it. -- CZW ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
