Cent OS migration

[Jay Ashworth]

----- Original Message -----
> From: "Boaz Bezborodko" <boaz at mirrotek.com>
> > 4. What RAID configuration is best for speed and failover, etc? We
> > are a busy place and can't afford downtime.

> 4. I don't know which is best, but we set up ours as RAID 0+1 for the
> combination of speed and reliability. I don't know if the speed of
> newer hardware means that RAID 5 can now run without the speed penalty
> it used to have.

Forgot: *use a real RAID controller*.  PERCraid5, Adaptec 2100S.  If it
doesn't have its own RAM and a battery module, it's not a real RAID 
controller.  Don't even bother with motherboard RAID.

And don't oversize your drives; you can get into 'coffin corner' if 
your drives are bigger than your controller can rebuild before a second 
one fails.  Get disks from different batches, and always buy a spare and
keep it bagged on the shelf.

Cheers,
-- jra