Needed a lower powered, but current generation chipset computer, with 16 GB RAM, that wouldn’t generate a lot of heat. I installed a 16 GB 2.5” Samsung SSD (pulled from a ~2009 Dell mini) to run TrueNAS OS. I disconnected the mSata to perform the OS install. I then reconnected the mSata and built a zvol to hold a weekly rsync backup of just one folder (~300 GB currently) from a much larger NAS. This was placed in a 800+ lb Liberty fire safe using a Liberty kit for Ethernet and power pass through. I may end up configuring to just power on once a week for the increments backups, but as of now temps are within reason and everything works like a charm.