Thanks. The portability bonus is a big one. Just two other questions I think. - Raid1 entirely in dom0? - Will RE type HDs be bad or good in this circumstance? I buy RE types but have recently become aware of the possibility where TLER (Time-Limited Error Recovery) can be an issue when run outside of a Raid, e.g. alone on desktop machine. I do have a utility where I can change the HDs firmware setting to get turn it off or on for either Read or Write delays. Christopher G. Stach II wrote: > ----- "Ben M." <centos at rivint.com> wrote: > >> I have had great luck with nvidia fakeraid on RAID1, but I see there >> are >> preferences for software raid. I have very little hands on with full >> Linux software RAID and that was about 14 years ago. > > MD RAID. I'd even opt for MD RAID over a lot of hardware implementations. This writeup summarizes a bit of why: > > http://jeremy.zawodny.com/blog/archives/008696.html > > Hardware RAID's performance is obviously going to be better, but it's only worth it if you *need* it (more than ~8 disks, parity). If you're just doing RAID 0, 1, or 10 in a single box and you're not pushing it to its limits as a DB server or benchmarking and going over it with a magnifying glass, you probably won't notice a difference in performance. > > I'll take fewer moving parts and portability. > > As someone already said, dmraid is done in software, too. "Fakeraid" is basically the same as MD RAID, but with an extra piece of hardware and extra logic bits to fail. >