Need Answer

A lot of upload traffic without any reason?

I have paired two Lima (without relay) and the have both the same data on their hard drives. So there should be no reason to copy anything.... but they are communicating all the day, since weeks, months... and the strange thing is, they are ONLY uploading but there is no download streaming. So where is all the data moving to (about 1000 GB per month!)? I tried several things to stop that uploading traffic but also at other remote locations they still start an uploading process.

Does anyone here has an idea?