This question already has an answer here:
I seem to be able to find lots of guides for backing up my PI that involve taking the SD card out, or running dd and hoping nothing changes.
But is there any way to take a proper, system-level, backup of my PI onto a NAS? I know with LVM you can use snapshots, but Raspian doesn't use LVM. Is there another way?
To be clear - I want to backup the entire SD card, so if it fails, I can grab a new one and restore. Or if I install too much crap and break the OS I can roll back.