I built a backup vault for my lab: a small Rocky Linux container on the most restricted VLAN I have, the database zone. Fresh container, correct IP, correct gateway. First test:
The power went out. When it came back, the Ceph quorum was broken, a monitor was crashing on every start, and SSH had reverted to port 22. Here's how I recovered the entire homelab 100% remotely — without touching a single cable.
Not a Raspberry Pi with Pi-hole. Not a basic NAS. A proper enterprise-grade datacenter at home — dual firewalls, 4-node Proxmox cluster, 12 VLANs, and a full service stack.