What types of media are usually used for data backup?

There are four primary types of media used for data backup.

1) DVDs - I find these tedious and space consuming but cheap and they'll do the trick. They do have the slowest data transfer rate of the possible media used for data transfer.

2) Hard Drive - Whether an external drive or an internal one docked in a "toaster" (A sata 3 docking station which allows the user to connect an internal hard drive to a different computer VIA USB so one doesn't have to physically hook it up to the motherboard)

3) Cloud Storage- Free services like skydrive or Dropbox (or icloud if you're a Mac user) are great for transferring documents between devices or to a new computer!

4) Flash media - Flash Drives and SSD Hard Drives are among the fastest ways to move data around!