I've backed up to an external drive and enabled time machine. How often do I need to backup on the external drive
ttime machine: how often do I need to back up to external drive?
How often do your files change? Can you handle losing 1 weeks of changes without backups? 2 weeks? 8 weeks?
With TimeMachine you can leave the external drive connected and get changes saved every hour. In fact, TimeMachine will make make "backup logs" every hour, and these logs will eventually fill up the hard drive if they are not allowed to write out to the external disk.
