Mine is mostly various cast-off enterprise hardware, living in a semi-finished room in the basement. From bottom to top: - Mid-'90s 42U IBM server cabinet - T

Mine is mostly various cast-off enterprise hardware, living in a semi-finished room in the basement. From bottom to top: - Mid-'90s 42U IBM server cabinet - Two 1500VA APC UPSes (non-rackmount) - 1U Dell R610 (PFSense firewall) - 1U Dell R620 (ESXi host) - 2U Dell R720XD (60TB NFS/CIFS storage server) - 4U rackmount case containing a Windows gaming/workstation PC - 4U rackmount case containing a Linux workstation (the previous iteration of the gaming/workstation PC) - Black Box KVM for the two workstations - TP-Link unmanaged 10GB switch - Cisco managed 1GB switch - Cable modem - Two 1U PDUs plugged into the UPSes - half-ass dual power path for the machines that support it. It's a pretty nice setup; I have a bunch of system service VMs on the ESXi host (IDS, Splunk, etc) and can spin up a new one in a few minutes whenever I have a new project or want to try something out. The cables from the KVM go through the floor to my office on the main floor so I don't have to listen to fans and can switch with a key combination. And of course I have plenty of storage for whatever - I back up all of my VMs and my workstations to it, I can download pretty much anything I need to, etc. And since it's been asked before, yes, electricity is oddly inexpensive where I live.