I have successfully backed up my laptop data using
deja-dup. I used a dedicated backup server, which I connected to using
ssh over my home LAN. The size of the backup on the server disk is 250 GB.
Afterwards, I am trying to create an incremental backup from the same laptop, this time from my workplace. The destination machine is the very same server, but this time, of course, I had to change the address.
I opened a port for SSH and installed noip on the server.
After starting the backup, deja-dup is forever in the "Preparing" stage.
iftop tells me that I am downloading data from the backup server at about 300 KiB/s.
I guess deja-dup needs to keep track of what is on the server already: is this correct?
A related question is: given a backup size of (for example) 259 GB, how much data will deja-dup download before starting the backup?