I ran a thinkpad T61 as a server for a bit. It’s a decent solution and yes it has a built in UPS :)
Really these big clusters rarely need to be run 24/7 so it’s more economical to run one node doing stuff that has to be on all the time. Everything else I run in virtualbox on my desktop which is a fairly hefty Ryzen which gets turned off when I don’t need it.
I will replace my Lenovo M series with a VPS node when someone does one that Devuan works on.
Really these big clusters rarely need to be run 24/7 so it’s more economical to run one node doing stuff that has to be on all the time. Everything else I run in virtualbox on my desktop which is a fairly hefty Ryzen which gets turned off when I don’t need it.
I will replace my Lenovo M series with a VPS node when someone does one that Devuan works on.