I have a macbook pro laptop using mountain lion. I just setup time machine onto a WD My Passport and it worked fine (took about 2 hours over USB 3.0 for 333 GB of stuff). My question is, given its a laptop, i will not have the external hard drive plugged in all of the time. Is there anything i need to worry about with regard to Time Machine config, etc given the fact that i won't have it plugged in all of the time.
If i skip a backup cycle because the hard drive is not plugged in, does it kick off right when i plug it in or when the next scheduled backup gets kicked off? Lets say I don't plug in the hard drive for a month. Does it queue up all of those backups or just start from where I am at when I plug it back in?