is a storage device that uses a magnetization process to write, rewrite and access data. 

is usually used for creating backup copies of large volumes of data because tape is very inexpensive compared to disks and CDs. 

is removable so you can take your data with you. 

have more storage capacity than diskettes and also offer faster access to the data they hold. 

hold much more data than a diskette and are faster for the CPU to access than a diskette. 

stores a large volumes of data relatively inexpensively. Some CD drives are read only memory (ROM), which means that your computer can read programs from CD’s.