Change the Time Machine Backup Schedule
Every Mac owner should be using Time Machine, it’s by far the easiest and most painless backup solution, running in the background and allowing for easy recovery of files or the entire operating system should something go wrong during an OS X update or otherwise. That said, Time Machine is a bit aggressive, and backs up all changes every hour that a drive is connected or within range, this is great for backup purposes but can be a nuisance when it hogs disk I/O and CPU cycles from other tasks. The easiest way to avoid this is to adjust the backup schedule, and we’ll show you how to do this from the Terminal, or with a super easy to use Preference Pane called TimeMachineScheduler.
Manually Changing Time Machine Backup Schedule
Using the command line and defaults write, you can manually adjust the Time Machine backup schedule. This command belongs on a single line: