Thank you very much for the answers, good to hear unraid is green and energy efficient even with docker+shared hdd access, sounds like I will then use an SSD for appdata, system shares and vms on the SSD.
I will need to do much more reading, research on this community especially space invader vids, maybe I am under using my current hardware (AMD 8 core cpu and 16gig might make a good unraid box) maybe I can ditch noisy bulky desktop PCs and use a VM on a monitor in another room somehow ?
And also look at backblaze and cloud storage for better off site backup solutions, I see a great post showing how some on this community have ditched expensive noisy hard drives and just use the cloud storage for their entire storage and media streaming, never even considered these things till I read it.