How to organize a home server (hypervisor for 2 OS) based on a nettop?

Question

FreeBSD

Purpose: to spend a minimum of funds and organize a home (portable) server.
It is ideal to meet 4-5k, for this amount you can take a nettop, for example, foxconn netbox, but they come without hard drives and RAM. By "perfect" I mean ready to buy immediately and without hesitation. In a non-ideal version, I'll think about a week, weigh the pros and cons.
Bush RAM can be obtained from friends for a nominal cost.
And as storage, take a 128 GB SSD, + 3k. Or use an existing external HDD.
I want to install a hypervisor (xen?) on it and run several operating systems:
Windows (7/XP) for specific software: SEO tools, home accounting, 5-10 GB.
CentOS / FreeBSD as a server for developing and running nix-specific tasks. 20-30 GB.
File dump: backups, cloud storage, media content. + external HDD.
Additional goodies:
Listen to music, watch movies (connect to a TV / projector), alarm clock, play games.
Requirements: Wi-Fi, minimum noise, minimum occupied space, temperature is not critical.
Actually, questions:
1) Is it worth taking a nettop as a basis?
2) What model do you recommend.
3) If not a nettop, then what else can be considered?
4) What iron will be optimal for virtualization? Atom, Celeron, i3/i5?
5) Hypervisor - xen?
6) What else is worth paying attention to?
upd. Current performance needs
A development server will be more than enough
(actually the specifications of the VDS I rented):
1000 MB RAM
1 CPU Xeon Core 3.3 GHz
10 GB Raid 10 SSD
OpenVZ virtualization
Asus
Solusvm server hardware
I'm currently playing Pharaoh + Cleopatra (www.gog.com/game/pharaoh_cleopatra)
Minimum system requirements: Windows XP / Windows Vista / Windows 7, 1.8 GHz Processor, 512MB RAM (1 GB recommended), 3D graphics card compatible with DirectX 7 (compatible with DirectX 9 recommended), 1GB HDD, Mouse, Keyboard.
Although 10 years ago it worked on a much less weak wheelbarrow =)
Total 2 GB of RAM for 2 simultaneously running OSes, + for the hypervisor + for the reserve, as a result, 4 GB is enough for everyone ©
Comparison of 3 Intel processors with hardware virtualization:
ark.intel.com/ru/compare/65697,69361,52273
Intel® Core™ i3-3217U Processor (3M Cache, 1.80 GHz)
Intel® Celeron® Processor 887 (2M Cache, 1.50 GHz)
Intel® Xeon® Processor E3-1240 (8M Cache, 3.30 GHz)
Or ready-made Acer Veriton N2620G nettop for 8,500 rubles.
Intel Celeron 887, 1500 MHz, 2048 MB, DDR-3, 500 GB, Intel HD Graphics, 1000 Mbps, Wi-Fi, Bluetooth, USB 3.0, DVI, HDMI, DOS, black
+ buy 2 GB RAM 1k. In fact, for 9,500 a solution out of the box.

Answer 1

First. And that prots in nettops support virtualization?
Second! Nettops are limited in the amount of RAM on them. Most often 2 gigs. Hypervisors now need more than 2 gigabytes.
Third! Well, you can’t fit into the budget of 6000 with such “I want”. At least 15!

Answer 2

New brilliant idea! Take a simple nettop, for example, based on Intel Atom D425 1.8GHz with Wi-Fi, ssd, 4GB (7k). Use it as an entry point, and instead of virtual machines, use clusters of bare Intel Galileo Board, Cubieboard3 Cubietruck and the like =)

Answer 3

Regarding the choice of hypervisor, I recommend Proxmox 3.2 . KVM + OpenVZ virtualization system on Debian, installed out of the box, immediately has a web management interface, you can use vnc. Own research on installation and configuration:
blog.bogdanov74.ru/page/zametki-o-workote-proxmox-3...
blog.bogdanov74.ru/page/zametki-o-workote-proxmox-3...