On Friday 03 March 2006 17:20, David Thompson wrote: > Peter =?iso-8859-1?q?Kjellstr=F6m?= wrote: > >I have two 8-port ones i a machine with 500GB hitachi drives, runs ok, but > > = NCQ=20 > >needs extremely new firmware from hitachi. I've so far tried, among > > other=20 things, raid0, raid5, lvm stripe over devices, heavy I/O while > > rebuilding, = =2E.=20 > >everything but two performance problems looks fine (#1 ext3 sucks on > > 3ware= =20 > >raid5, #2 I can't get good read performance on two raid5s in a lvm > > stripe). > > Yeah, we've also seen performance issues with raid5 on the 9500 series > products. The benchmarks we run look good, but when we've put them into > production file server environments, the performance has been > disappointing. With 500GB disks now available for $4.95 down at the local > Walgreen's, we've gone to raid 1 and are _very_ pleased with the > performance. Although it's been discouraged on this list, we're using xfs > and the unsupported CentOS kernels and haven't had any problems. We're > anxiously waiting the 'new, improved' xfs drivers for CentOS :) :) with xfs the 9550-SX is alot faster in raid5 than the 9500-S (have them both) /Peter > > Dave -- ------------------------------------------------------------ Peter Kjellström | National Supercomputer Centre | Sweden | http://www.nsc.liu.se -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 191 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20060303/e782f7a6/attachment-0004.sig>