Mapped storage locations keep failing

I’ve a storage location set up through samba pointed at a server location, which happens to be the server that has the hyper visor that hosts HA, so it’s definitely always on.
It’ll work for a week or so and then just declare that it’s unavailable.
If I re-enter the details typically nothing happens, if I create a new storage location with the same details but a different name it’ll typically work.
Any thoughts? All I really want to do is write to a one drive location from node red, is there just a different way of doing this?

Any clues in the logs for system, network and Samba logs?