This is basically my homelab. Synology 1618 + 3x Lenovo M920Q systems with 1TB names. I upgraded to a 10gb fibre switch so they run Proxmox + Ceph, with the Synology offering additional fibre storage with the add on 10gb fibre card.
That’s probably a few steps up from what the OP is asking for.
Splitting out storage and computer is definitely good first step to increase optimization and increase failure resiliency.
Ceph is… fine. I feel like I don’t know it enough to properly maintain it. I only went with 10gbe because I was basically told on a homelab reddit that Ceph will fail in unpredictable ways unless you give it crazy speeds for it’s storage and network. And yet, it has perpetually complained about too many placement groups.
1 pools have too many placement groups Pool tank has 128 placement groups, should have 32
Aside from that and the occasional falling over of monitors it’s been relatively quiet? I’m tempted to use use the Synology for all the storage and let the 10GbE network be carved up into VM traffic instead. Right now I’m using bonded USB 1GbE copper and it’s kind of sketchy.