Although I do not do many hardware projects, I do run a small homelab running Proxmox where I conduct my SysAdmin and DevOps shenanigans.
I've virtualized several services, such as an OPNsense machine that sits on the home network's DMZ, serving as the firewall and router for the services.
One service I run is a Debian box with device passthrough for a 14TB RAID-1 array. RAID is handled by Proxmox. The virtual disks use XFS. There is also a 1TB SSD passed through using BTRFS.
Another service I run is a Forgejo instance, which hosts my personal source forge. I use that to backup repos and mess around with CI runners, which Forgejo has support for. I also have a self-hosted Minio storage hooked up to it.
The rig is running a 4-core Intel i5 chip and 32GB DDR4. There are five 2.5Gbps PCIe ethernet ports and a single 1Gbps ethernet port on the motherboard. It has four SSDs totaling 2TB, along with two Seagate Exos X18 14TB NAS drives. All of that atop an ASUS Mini-ATX board from the 2010s. Not the most impressive mess, but a functional one nevertheless.
I love resuscitating old machines with Linux. My favorite distros are Gentoo and Nix.
Sorry, I don't use Arch.