Proxmox

Selected a virtualization software : proxmox
Made few vm's from templates, maybe more later.

I recommend you to try the software out http://www.proxmox.com

Home Server Project Intel Atom

So I decided to build a home server, only requirement was 64bit low power infrastructure.

I had few choices, but I decided to get Intel® Desktop Board D525MW

Memory 2x2GB Kingston Valueram DDR3 NON-ECC CL9 SO-DIMM's

HDD Old Samsung HM1121HI 120.0 GB 5400rpm/8M for starters, maybe replace SDD someday.

Casing Ace Proton 60W

As for server software, I'll come back when I've selected it.