I have been using Apple’s backup utility, Time Machine, on my MacBook Pro for quite some time now and don’t really think too much of it on a day to day basis. That is until my laptop started making a sound like it had a cricket trapped inside. This is the sound of a failing hard drive, which is never a good thing. Thankfully, Apple has made it almost too easy to get things up and running when the situation goes south. The whole operation took less than 2 hours to replace the faulty drive and restore my current working state from my Time Machine backup. Trust me, this is no time in comparison to re-installing Mountain Lion, all my applications, and setting up various software development environments. If you aren’t using it already, go pick up an external hard drive and get it going. It will save you a great deal of trouble when the unthinkable happens.