I have and I have done unifi. I don’t like being restricted to their NVR or software solutions because it means I to toss the cameras if I want to extend solution with things like ptz or verifocal cameras. Want to add ai/ml detection sorry can’t do…
Unifi is good for some people but it’s not the solution for everyone. Reolink can also offer similar ecosystem experiences but also while letting you expand your system if wanted.
Create 3 VM’s and pass-through disks to each VM. Boom ceph cluster on a single computer.
ZFS/BRTFS might still be better, but if you really want Ceph this should work and provide expansion and redundancy at a block device level, though you wont have any hardware redundancy regarding power/nodes.