On Sun, 2006-02-12 at 01:12, Isreal Varela wrote:
I would like some advice on a SATA RAID controller that is able to work in a 32 bit/33mhz PCI slot. I have been looking for a while but all I can find is 64 bit cards that cost over $300. I just need it to mirror 2 drives, and of course work in Centos 4.2. I am not looking for RAID 5 or anything like that. All the cards I find that would do this are fakeraid.
Any particular reason why you're not using Linux Software RAID? Having had to swap RAID arrays in a hurry to alien hardware, using standard IDE and software RAID was a lifesaver for me!
I always thought hardware RAID was the way to go, Seems cleaner to me. Just used to doing it that way in the Microsoft world I guess.
Hardware is better for raid5 where some computation is required. For raid1 it is just a matter of having drives that can execute commands concurrently. That is, using 2 drives on the same IDE controller would be a bad idea, but SCSI is OK and SATA only permits one drive per controller anyway. There is not a lot of CPU overhead in mirroring.