On the fence to build my NAS that is mainly for storage with 4 or 5 HDDs of raid 5 of the first stage. I don't know about FreeNAS, Ubuntu, .. and I don't want to install it either. Just focus on Windows OS. I plan to buy Windows Server 2012 Essentials for my NAS/ media server, but I suddenly found Windows Storage Server 2012 that is specifically optimized for use with network-attached storage devices.
My question here is what are differences between them? Which one should I go with if doesn't care much about money I have to pay for the OS? My NAS will be increased in capacity in the next few years, in fact.
Much appreciate for your inputs.