Thought about the 900D, but I do have a Caselab M8 sitting in the garage which I'm thinking of switching over to. (see below pic for previous build)
Since I'm replacing the mobo/CPU this weekend. I might just do it all in one hit........but I need to order more drive cages from Caselabs to fit all 16 hard drives.
By the way, Hardware raid is the way to go.
Unfortunately the new Raid card got damaged during transit. So I can't tell you yet what I think of it.
I'm currently using an Adaptec 6805 which is only a 8 port raid card.
No real issues with my current raid card.
I have x2 arrays each with 4x3TB each in raid 5.
Write speeds from my SSD to the raid is approx 350-400MB/s using 6Gb/s drives.
Setup have not changed for the past 2 years.
Once I get the replacement card, it will be the first time migrating all the data across to x16 3TB drives
Gonna try raid 2 arrays in raid 6.