[OT] Useable BIOS RAID 1 on the cheap?

[Chris Benson]

On Tue, Jan 17, 2006 at 09:12:22PM +0000, Dirk Koopman wrote:
> On Tue, 2006-01-17 at 19:46 +0000, Chris Benson wrote:
> > Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
> >                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> > Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
> > beta             2G 36079  94 59261  31 25349  13 24238  65 44377  15 354.4   1
> 
> Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
>                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
> dirk3.int.tobit. 2G 35579  93 72526  28 26441   8 34530  82 57350  10 236.0   0

Thank you: that gives some something to compare with!

> That's about right for a modern setup, using ATA, but it looks like raid
> 1 (mirroring) rather than raid 0. This does not give you any speed up
> over a raid 0 (striping) setup. But then I suspect you are more
> interested in the data integrity :-)

Correct on all counts.

While almost all your RAID0 numbers is faster than my RAID1, the i/o is
plenty fast enough for me.  I'm most concerned that the machine stays up
when I'm away from home for weeks at a time!

<aside>Am I alone in rating data security above speed? I'm RAID1-ing
home servers. Most of the servers at work are RAID1 for o/s and RAID0+1
(or is that 1+0?) or RAID[45] with a remote mirror ...

Best wishes
-- 
Chris Benson