This is a video I threw together some years back covering one of my racks. I have since retired the HP units and replaced them with Dell 630s.
I have another smaller, quieter rack in my studio (14u), and also one in my bedroom closet (14u).
All the main data connections are fiber. Storage servers have 4 10GbE bonded NICs, compute servers have 2.
Plans for the future include upgrading the storage array to Dell 730s with external HBAs and disk shelves, adding AI accelerator cards to the compute nodes, and eventually upgrading to SPF28 (once the cost of switching becomes reasonable.)