Ok i have a few questions about hard-drives. One being what does sata mean and why is it an advantage to have. Second, what does the rpm stand for and what does it help or what is its puprose on an hd. Also is it true if i had for example a 120GB sata hardrive and i used 60GB of it ( which I would like not get close to most likley) will my whole system slow down? Thanks for all replies and views.