I'm needing to expand my server and am looking at a 16 or 20 bay 3-4u case.
Problem I'm running into, is I can't find hardly any non-RAID SATA controller cards. It seems ridiculous to have to pay several hundred to get a card with functionality I will never use.
Trying to find a either a 20 port or, a 10 port, or a 6 port, a 4 port and a 10 port SATA host card.
I use mdadm for everything.
To give you an idea I have a google search for 6 port cards http://www.google.com/products?q=sata+%226+port%22+card
Multiplexing isn't an option, as it does not play well with mdadm, so my experience has been.