I run a headless server (i.e. a normal pc without a screen) in my garage. I usually use "Splashtop" to remotely log in to it, unless a Windows update has managed to break it. It has:
1. Win10 Pro running on a Samsung 250GB SSD.
2. An AMD FX-8350 8 core CPU running at 4Ghz.
3. 32GB of RAM.
4. A second Samsung 250GB SSD specifically for BI5 database and "New" files.
5. A WD Purple 4TB drive for long term storage of BI5 files. I get about 1 month.
6. Emby media server - Has a 2TB and a 4TB drives for recordings.
7. Homeseer HS3 Pro for all home automation duties. BI plug in for control. Home telephone whitelisting with HSPhone. No spam calls

8. TVMosaic - Dual S2 satellite receiver with a fixed and a motorised dish. Dual T2 receiver. Uses another 2TB HD for recordings.
BI5 presently has 3 1080 IP cameras on it, and two old analogue cameras via a Piccolo Pro 2 PCI card. BI5 is set for 24/7 recording, but does motion detection alerts too. BI takes around 9% CPU, and all of the other software runs very well, and doesn't miss a beat.
How about you guys and gals ?