In addition to the storage of data on a computer's hard drive or on a server, the storage of a copy of the data on a removable media is prudent strategy. In the event of the computer's failure or destruction, the data is safe for subsequent retrieval and use.

Prior to the development of solid data storage, such as CD- and DVD-ROM, the use of tape as a storage medium was widespread. Tape has always been the least expensive storage medium at less than a penny per megabyte, versus five cents for optical or magnetic storage. Tape storage, however, acquired the reputation of being very slow. Now, faster and more efficient tape technologies are available from a number of companies. If the time required for backup is not a factor, tape storage can still be the best option for a user.

The most popular tape...