[smcleod]

You wouldn’t usually just have a single backup system, If the disk image that time machine is stored on head issues that would usually be picked up at the time. It was being mounted and either repaired or you’d get less that the discount is corrupt. it’s never going to be as good as something like Borg where you’re doing regular data consistency checks but you can still check the fast system of the DMG as frequently as you wish.