kenopsik

So by migration, you mean just using the same drive in another system? That's potentially a major data loss moment. You at the very least should back everything up before you try to "migrate" without copying files.

I don't use Synology, so I can't speak to the exact process you need to follow. But I imagine it will require you to format your drive if it's somehow locked into Synology's system in order to use it with something else.

It's likely similar to reinstalling a different OS. You have to back everything up and format the drive. It likely uses a different file system.

Another drive.

Edit: it's the first line of the manpage: rsync -- a fast, versatile, remote (and local) file-copying tool.