Someone asked me just yesterday, what the best statergy on Backup was, and I helped with a little advice, So I've also decided to post my Strategy here also just in case it may help others wondering the same: This is based on using a 1TB Hard Drive ( in my Case WD Caviar Green 64MB Cache) Since it's highly unlikely that your Operating system alone is going to occupy more that 40GB with all updates etc and programs then 120GB should suffice for this portion of the drive. This leaves 611GB still free remaining, as windows reads 1TB as 931GB only. Therfore splitting the 611 into half (e.g 420GB and 390GB leaves space for DATA & BACKUP. Also the read write on the OS partition will be significantly faster ( In my case for this drive 300MBS as theres less space in which to read it. So in my case I have a 1TB devided in 3 partitions 120/ 420/ 390, and of course 100MB reserved area. A Few people have thought that partioning their hard drive will save them from dissaster, and things wont go wrong, for those that don't know, partioning a hard drive only places sectors of the disk in seperate locations on the actual drive, it does NOT! split the drive into 3 seperate pieces, (which one person acctually believed) so, Having a second hard drive installed as a reserve, or an external hard drive is also good, as you can create a second backup on this drive should the main drive fail. Another way of viewing partioning is to think of your hard drive as your house, and each partition represents a room in your house. Having huge space for an OS drive alone is wasted, as you may have noticed SSD drives are now usually only 60/120/240 GB in size for that reason alone. A friend of mine refuses to use an SSD for that only reason, because quote: "He wants the space" for what i have no idea, unless he's going to fill it with 950GB worth of mp3 or movies, but anyway thats my Partioning and backup strategy.