> Performance used to dictate that a mirrorred set was faster. However if you
> are running with any of the newer raid controllers the difference is
> negligable. 

It looks like he's using software volume management for his RAID
set.... In general, it just depends on the amount of data that is being
written to disk. If you've got a backup server doing 100's of backups with
lots of logging, then RAID 5 is a *bad* idea. If it's just a small shop
only backing up a couple of servers, go for it. The savings would be
worth it.

There is price, performance, and relability.... pick 2....

> I'm setting up a file system for /usr/openv using volume manager with
> four disks, and I'm wondering if it would be better to make it a raid5
> system, or a concatenated mirror.  If I use mirroring, then my disk
> space is limited to that of the two disks, but with raid5, I get an
> extra disk space.  For performance reasons, what would be the best
> layout of disks?
> 
> thanks
> robert
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>