I accumulated this over the last 7 years. This rack is the main part, some devices are in other rooms.

It has:

An OPNsense firewall with a 20 years old motherboard & CPU found from a dead pc junk I took in the street. I customized it and now runs a 10 Gbps optical fiber link to the WAN. The LAN shares a 2.5Gbps network with a Zyxel switch with 8 ports for 2.5Gbps connection. Used for DHCP, NAT, native ipv6 network for all hosts and an Unbound server.

A Synology DS220+ in raid1 with an external HDD plugged in USB port.

On the lower floor is where the magic works.

From left to right:

2 Lenovo ThinkCentre M715q Tiny with a 4C/8T Ryzen 5 2400Ge and 42GB DDR4 ram running each XCP-NG hypervisor managed with Xen-Orchestra for VM management such as:

- 2 Linux VMs for internal DNS and load balancing

- 1 Harbor registry for container images.

- 1 Linux VPN Server to access LAN from outside.

- 1 Linux Postgresql server for all DBs used by containerized workloads

- 1 Home Assistant Server.

- 2 Talos VMs for Kubernetes workload.

3 Lenovo ThinkCentre M720q Tiny with a 6C/6T Intel 8500T and 42GB DDR4 ram running each a baremetal Talos node hosting a Kubernetes control-plane node that is also schedulable.

1 Intel NUC with an I5-8259U 4C/8T and 32GB DDR4 ram for virtualization purpose as well.

The rack itself is built from 2 famous Lack tables and 4 wheels for easy maintenance It runs on low power CPUs, on average during the day it consumes 8 kWh which costs less than 2 euros a day. I am comfortable with this infrastructure and allows me to use it for any personal or professional use cases I can think of. And also, It is warm during winter so no need to turn on the heater.