Maybe not quite that big and bad, but 2 SDRs covering 2 systems (San Diego City & County) and about 7.5mhz of spectrum on a kinda-old Lenovo mini PC (i5-4570T CPU @ 2.90GHz and 8gb RAM) running Ubuntu server. CPU usage seems to be about 50-60% with 22 recorders configured. Memory usage is <1gb.
I record all my calls to a ramdrive to save wear and tear, they are uploaded to broadcastify and then deleted.
It seems the latest trunk-recorder that will auto-upload to broadcastify, even with the archiveAudio flag to false will still save all the json files so I wrote a dirty "upload" script that waits 30 seconds and then deletes the json as well so they don't consume my ramdrive over time.