> As for a filesystem. I wouldn't recommend ext2 or ext3 at all. I would
> _highly_ recommend a journaling filesystem such as Reiserfs
> (http://www.namesys.com) or XFS (http://oss.sgi.com). I've used
reiserfs for
> a long time, but XFS is growing on me. It seems to be more stable in
latest
> 2.4 kernels.

I don't know the reason for this. I'd refer people to
http://www.linuxjournal.com//article.php?sid=5840 Although that article
talks about Oracle, we also found ext3 for mysql data disks to be the
best choice from our own experience. Reiserfs jams with lots of small
files though; useful when compiling (mysql source for example) or for a
webserver. Actually, I like it for everything but the mysql data dir.

> Is it better to take Raid level 1 or 0 ?

RAID 0 or RAID 0+1 with a lot of disks makes a huge speed difference
under load. SQL server speed (trx/s) can correlate to the rotational
speed of the disks once the server is disk bound. RAID 0 lets you
increase the effective speed of the virtual drive by summing the speed
of the disks (roughly). I have no experience with IDE RAID though. SCSI
still outperforms and likely always will.

Sincerely,
Steven Roussey
http://Network54.com/?pp=e 

sql, query



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