I've gotten so used to Arq Backup (macOS/Windows) (and Time Machine (macOS)), neither of which are convenient to run against Linux, that I've actually come to a

I've gotten so used to Arq Backup (macOS/Windows) (and Time Machine (macOS)), neither of which are convenient to run against Linux, that I've actually come to avoid using Linux as something to be backed up except as a container or VM, wholesale.