How to increase my Synology NAS backup storage

I recently ran into the problem that the backup storage of my Synology NAS ran out of space. Buying a bigger harddrive is trivial – keeping all existing backup data and continuing incremental backups is not. I googled a lot because I thought this is a fairly common problem, but strangely I couldn’t find any guides on that. So, I did a little bit of trying and hacking and in the end, the solution was simpler than I expected. In this post, I want to show you how I did it.

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