Right way to syncronize synology NAS

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Posts: 6
Joined: 7 May 2017

kavouras

I have the synology DS216J and i want to keep a backupof all the data on an external hard drive connected to my pc.
Which is the right way to do it? Choosing two way or mirror?
I am afraid to use two way because i am not sure which data will be syncronised. I want the data from the NAS to be copied on the external hard drive, and not the opposite. So i need an exact copy of the NAS as a backup.

Thank you very much.