I bought a second hand QLA2344 card and it works perfectly.

Just flashed the newest bios to it and set the frames to 512. 2 windows servers are now connected and speed is very good.

Speeds of writing/reading in excess of 150Mb and more

The system uses a Areca 24port 1280 with 2 gb. 2 x raid 5 (10tb) combined in a software stripe with Open-E (20Tb volume)

A third system will be a ESX 3.5 server for VM-Storage en maybe a 4th server to test SAN-Booting.