FreeBSD 6.0 as storage server with raid5?

[Brian Fundakowski Feldman]

On Thu, Dec 08, 2005 at 08:30:33PM +0100, Torfinn Ingolfsen wrote:
> On Thu, 08 Dec 2005 14:15:48 +0100
> Ivan Voras <ivoras at fer.hr> wrote:
> 
> > You could use graid3(8) - it has data+parity components like raid5.
> 
> What about write performance? Based on RAID3 documentation I have read
> (on the 'net, so I cannot vouch for the correctness of it), you will get
> worse write performance than with RAID5. Does anybody have some real
> numbers here?
> 
> > I've  been using it for more than a year now and didn't have problems
> > with it.  Didn't have to try recovery from a dead disk also, but
> > should work ok.
> 
> I would prefer a firsthand "crash" report that tells what happened, and
> a step-by-step "here's how I fixed it" guide, but ok. :-)

It is REALLY FAST!  Make sure you use 6.0-RELEASE or later so that you
have the fix for lock-ups in certain usage patterns and also configure
it for performance with "graid3 label -r".

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green at FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\