TerraMaster Forum

I am trying to mirror a folder on my F4-210 to another NAS on my network. So far I have not been able to get the backup function (rsync) to do this correctly. It copies over files that already exist in the mirror and skips new files that need to be copied.

Can someone help to set this up successfully?

I'm not sure the specific reason why you failed to backup using Rsync.
Perhaps you can consider the "Remote Folder" feature (SMB/NFS), mount another NAS folder to an empty directory on F4-210, and then try setting up a backup.
Of course, generally you can also mount the F4-210 shared disk to your other NAS.