Magnetic Tapes

1. Long history, slow, and limited to sequential access, and thus are used for backup, storage for infrequent access, and off-line medium for system transfer.
2. Moving to the correct spot may take minutes, but once positioned, tape drives can write data at density and speed approaching to those of disk drives.
3. 8mm tape drive has the highest density, and we store 5 GB data on a 350-foot tape.
4. Popularly used for storage of large volumes of data, such as video, image, or remote sensing data.