[Observium] What determines a devices' uniqueness?

Hi All,

We're currently evaluating observium as a our main network monitoring tool. We're using Observium CE 0.16.10.8128 and wondering how observium determines a device as unique?

We currently have the same switch added twice (via auto discovery) into observium and wondered why observium didn't detect it as the same device.

Thanks for a wonderful tool!

Kind regards,

Seb Harrington Network Team Lead, IT Services, University of Sussex,