Of course to fit the power meter you need to switch them off .
I have a small HP Micro Server that I have just discovered pulls 40W continuously. I used it as an ESXi platform. I’ve moved everything to an old laptop running Proxmox which draws about 8W for the same job with the added benefit of a builtin UPS. Plus Proxmox is so much better as a platform. Win Win.
I was thinking of re-purposing the Micro Server as a NAS with FreeNAS and retiring an old Netgear NasDuo, but on that basis the NasDuo, while not perfect, will have to get new disks!
In one go I took out 7% of my base load!