Should you use CDs or DVDs to back up your computer?

It really depends on how much stuff you need to back up. CDs can usually hold 800 MB (megabytes) of storage. Standard DVDs can hold 4.7 GB (4812.8 MB) of storage. Dual/Double Layer DVDs can hold 8.5 GB, and some of the new Blu-ray discs can hold up to 25 GB of storage. To back up your computer, you need a CD Burner or DVD Burner. I would recommend investing about $40 in a good DVD Burner and then backing up your most important data using normal or dual/double layer DVDs. However, if you really want to spend a lot of money backing up your PC and making it easy, you can buy external hard drives for a couple of hundred bucks that will hold 500 GB and make it really simple for backing up your computer.