From what I have gathered, time machine purely backs up all of the data on your laptop onto a hard drive. Which means it is additionally kept on another storage space. But I only have 9 GB of space left on my MacBook Pro. I'm not sure how much I originally had, but I do know that I have over 54,000 photos on my computer, around 5000 songs and a lot of movies. So I figured I should buy a 1 TB external hard drive to free up the space on my laptop, and have all of my photos or movies easily accessible if I needed them. But I am confused as to whether or not I should be using time machine. Please help!