Data Storage Media A Guide to Selecting Media For Storing and Backing Up Computer Data
Data, or information stored on your computer, can either be held on fixed disk drives inside the computer or on removable media such as CD’s that can be inserted and removed. Removable media can be used to transfer files between computers or to backup the data already existing on fixed disk drives. There are three types of removable media: Magnetic, Optical and Flash.
Magnetic Storage
Magnetic Storage: Hard disks, floppy disks and digital audiotape are examples of Magnetic storage. They operate through a read/write head, which creates and reads magnetic impressions on the disk.
The downside
-> The magnetic impression only lasts for around five years
-> The capacity of most removable magnetic disks is too low for many types of files
Optical storage
Optical Storage holds information in digital form that is written and read by a laser. All CD and DVD devices are examples of this.
The upside
-> Increased capacity: one Optical disc can store the same amount of data as over 500 diskettes
-> Durability: they...
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