I can't get nsync to work on my two N4100s (the reason I have bought two is that I wanted to have them sync'ed). At first I've just copied my data (1.2TB) onto first one and set up the nsync task (Target Server Manufacturer: Thecus NAS, Nsync Mode: Synchronize). After first sync only about 10% data was copied. Settings and permissions on both source and target device were double-triple checked. OK, I though, maybe there is a data amount limit or something, I'll give it more tries. But following syncs didn't change a thing, the rest of the data remain uncopied. Then I changed Nsync Mode to Incremental, but it didn't help either. So eventually I thought that maybe 1.2TB is too much for N4100 to handle and I copied all the data from one device to another by hand. But it still doesn't work, changed or newly created files are not being copied (neither in Synchronize nor in Incremental mode).

So, my question is how do I get this thing to work?