Hello all, I just got a new 2TB drive and found an old 500GB drive to backup my data on. I'm at a dilemma if I should use Time Machine to backup my data or just drag and drop files that I find valuable. The only problem I see with Time Machine is that my external HDD will not be plugged into my machine 24/7, maybe once a week.. or a month since most of my valuable information that changes on a daily basis are sync'd through Dropbox. My other data are previous school work, picture, music, immigration docs, etc things that are pretty static. So what are the pros and cons of using Time Machine vs drag and drop? And what would you use in my situation?