[CentOS] Centos and Software RAID
Les Mikesell
lesmikesell at gmail.com
Fri May 26 23:34:14 UTC 2006
On Fri, 2006-05-26 at 16:56, Barry L. Kline wrote:
> It's doubtful that your on-board RAID controller is going to work with
> Linux. Most of the on-board controllers are really nothing more than
> two SATA channels with the driver (for Windows) providing the RAID
> functionality. Thus, you're really not gaining hardware RAID, in spite
> of what you are led to believe by the BIOS options. That's why Linux is
> reporting it as two drives.
>
> You have two choices: 1) Buy a hardware RAID controller (my choice
> being the 3ware brand), or 2) use software RAID. Since that's what
> you'd be getting anyways if you were using this board with Windows and
> the appropriate driver, you're not losing anything.
>
> FWIW I've had no problems whatsoever when using software RAID. I use it
> on many of my servers.
Note that unless it has changed recently, SATA drives don't pass
errors up to the software raid layer correctly. If a drive
dies it doesn't get kicked out as it should.
--
Les Mikesell
lesmikesell at gmail.com
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