From: Arno Wagner on
Previously markm75 <markm75c(a)msn.com> wrote:
> I'm brainstorming a new server.. i've decided to go with a 12 drive
> case for this one.. which means the 8 port pci-e 3ware card now needs
> to be a 12 port..

> But.. this motherboard
> http://www.atacom.com/program/print_html_new.cgi?cart_id=8580932_66_122_195_5&Pagecode=SEARCH_ALL&Item_code=MBXE_SUPE_X7_04&USER_ID=www
> already has 6 sata and raid5 and raid10 ability...

> Would it be a bad idea to use the onboard one for the extra 4 drives?

> This server will house 3 sql instances, file serving, antivirus
> central server, but the user base is 40 and 2 of those sql instances
> are low hit rates.

> Would i see that much more performance for the extra $250 it would
> cost to put them all on the same card.. or in fact.. might it be
> better just to split them up in fact.

Depends on your access patterns. On-board ''RAID'' is typically
fakeRAID. It is not faster than software-RAID, but less flexible
and if the board dies you may have a recovery problem.

If you are satisfied with the 3ware controller's performance but
need 12 RAIDed disks, I would advise you to get a 12 port
controller. Otherwise put a true software RAID on the remaining
4 disks.

Arno