One of my Arq Backups finally hit the disk limit. This was expected as I had not set a budget, so the backup kept growing until it failed. Unlike Time Machine, when Arq hits a limit it does not automatically delete old backups. This is good because it lets me decide if I want to move the backup to a larger disk. If I don’t, I can always set a budget to be slightly less than the size of the disk. I like that it’s my choice.
So I set the budget and manually told Arq to enforce the budget. For 240 GB over 185 backups, it took about 3 hours to figure out what needed to be deleted. But the results were … uh … curious.