2) Is there any drive size limitation on the CERC that might prohibit us from using Seagate Barracuda 1.5TB drives?Yes, I think there are limitations with the CERC 1.5/6ch controller. That controller is really poor anyway. I recommend that you get a PERC 5/ I card and use that instead for your hard drives. We have a PE1800 with a PERC 5/I and it works great with 3.5TB of RAID5 that can do 500MBytes/sec sequentialI/O; it is a huge improvement for the PE1800.
RAID isn't a high concern, I'm actually just trying to get the CERC to talk to any and all of the 1.5TB disks.
When I ordered the PE1800, I ordered it with 6x 500gb drives. The CERC can only RAID5 up to 4 disks, but it could do a raid0 or raid1 with 6 drives. To get around this, I set up the CERC with 6 separate volumes, one volume assigned per disk (each volume had no raid level). The CERC controller announced these six arrays to the OS as 6 independent disks, and then I used software RAID5 at the OS level. I never benchmarked the throughput, but it seemed in line with just having a normal software RAID with any internal SATA controller.
So to recap - has anyone tried to put a 1.5TB disk on a CERC?
Thanks!
Howard
--
Never interrupt your enemy when he is making a mistake
Napoleon Bonaparte
Howard Powell
Computer Support Technician
Astronomy Department, UVa
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
