oops, then can I choose any of below or are there any limitations I need to be aware of
Digilite DL425 ATOM Combo Motherboard | Combo Motherboard | Flipkart.com
Motherboard Atom 410PT (Intel) @ 3,800 all inclusive | eBay
I think most of this combo's will have less sata ports which defeats the very purpose of NAS. The one listed in flipkart has only 2 sata ports. So better to go with a motherboard with atleast more than 4 sata ports as sam suggested which gives you atleast (4*2 = 8TB) of space over the fly. Combo ones will be good for htpc purpose but may not be worth for a dedicated NAS.
Thanks