I'm using a Intel Atom/Avoton C2570. The mainboard has not enough SATA ports. I want to run a software RAID to not be dependent to dedicated hardware. At the moment I have 4x WD Red drives as RAID6. Later I want to add up to 4 drives extra.
So I'm looking not for a RAID controller but for an HBA. Is there a cheap device which can be safely used?
I can find some interesting devices like
Dell PERC H200
HP Smart Array H240
IBM ServeRAID M1015 (which can be flashed to 9211-8i)
Which one to choose? Or is there a better one in this price range? (An original LSI 9211-8i for about 300€ is too expensive for me)