Eh, I’d take their recommendation with a grain of salt. They’re likely targeting worst case. Like a university with thousands of users. If you say put proxmox on the laptop, connect your nas as storage, then run the db vm/container with it’s storage as the nas, I doubt you’d see any issues. You might notice a bit more latency and slowness, but I doubt any data loss. This setup is how I run all my VMs for years, some of the VMs have databases. Zero issues.