Re: Linux supports hot-swappable hardware? [was Re:

On Wed, 18 Jun 2003, Bruce Momjian wrote:

> scott.marlowe wrote:
> > I've found that while it's a little harder to hot swap individual disks in
> > linux using sw RAID, the ability to make the raid behave exactly as I want
> > is worth it.  Having lost a RAID5 set to a hw controller that simply had
> > the cable to two drives come loose but refused to accept them back into
> > the RAID5 after that without formatting them first, I'm no longer as wild
> > about hw raid controllers as I once was.
>
> It seems that RAID controllers seem to be as likely a failure point as
> disk drives.

Actually, the LSI cards can be setup to each run a RAID0 and then RAID1
them together, and if one card fails, the other keeps running.  I.e. they
can run two or more cards as though they were a single device.  It's
pretty slick.  I'm just not happy with they way they behave when certain
things happen, like my story above.