I hope that Areca will make a 6Gb/sec raid card. I know as of now no regular hard drive can saturate that speed and I do know they make SAS cards that do handle that speed. Overall my experience has been great with this card, as I can hot swap hard...
Well I have owned this card for well over a year now and I have never had any problems with it. It is very fast, as I can easily sustain 1.4 GB /sec. I have 4 500 GB drives in a raid 0, 10 WD 1TB drives in a raid 6, and 10 Samsung 1TB drives in a raid...
It is expensive but you get what you pay for