Estimating memory requirements

I am evaluating using Duplicacy on my Synology NAS device, but I am wondering if the 1GB of memory it has is enough. I started a test with an initial backup which is running fine using about half of the system memory, bu tI am concerned that subsequent backups (or check or prune) will need more memory. The backup repository is about 1TB of data and 500,000 files.

I see some threads about memory problems from a couple years ago, but nothing recently.

Any thoughts?

It is true that subsequent backups may use more memory than an initial one because a subsequent backup also needs to load the last snapshot into memory. However, it is hard to estimate how much more memory is needed for loading the last snapshot. The best way to find out is to just run the backup and watch the memory usage.