From: Lee W <centos-list at unassemble.co.uk> > Ebay UK didn't turn up much (althought there was a few in the US). > However just tried googling a bit more and I've come across a 3ware > Escalade 7506-4LP for about �200.00 which supports upto 4 drives so that > should be suitable for my purposes, plus it looks quite small (being a > Low-Profile card) so should fit in the rack as well. You can even take the bracket off as long as you can mechanically secure it another way. > Okay I'm getting a bit over my head now. Anyone see any problems > putting 2 of these in the same machine. 3Ware has always supported up to 4 cards in a system. Just make sure the firmwares are the same for each model or expect issues with drivers. > After a few other comments I was thinking of trying 2 x RAID-1's. Why not a 4-drive RAID-0+1? It's far better to do it on a single card. Unless you are thinking of (2) RAID-1, each on their own PCI-X channel, and then a RAID-0 LVM2 stripe across them? In reality, you're really gotta get up to 8 drives in RAID-0+1 before you're going to saturate the 0.5GBps 64-bit @ 66MHz PCI bus. And in all the 1U systems I've seen, I've only seen a maximum of (2) PCI-X channels. You'll want to use one dedicated to your NIC. -- Bryan J. Smith mailto:b.j.smith at ieee.org