@IceBurst thanks a lot for your explanation. I mentioned the mother board just to see if this can take a lot of hard drives? and using USB3 hubs I might extend the number of attached hard drives.
A while ago I was thinking to use backuppods 6.0 $4900, but I think its expensive. with this hardware you can have up to 600TB in a single unit.
I am looking for your advice and help regarding the cheapest possible hardware to mine burst. my goal is to get 500TB for now.