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What Is Hard Disk Media?


Hard disk media is the primary medium for memory storage in computers. It is commonly formulated on an aluminium or glass substrate base. Thin films of magnetic alloys are then sputtered on to the substrate and this will contain all the memory in the form of magnetic bits. Just imagine a pizza with everything on it!

The orientation of magnetic bits determines the output signals which are then translated into binary signals for the computer to decipher information. Often media development progresses hand in hand with drive head development.



Hard disk media come in several sizes, or form factors, depending on their application. Desktop PCs and home consumer electronics use the 3.5" form factor while laptop notebooks and other mobile applications employ smaller form factors like 2.5", 1.89", 1" and 0.85" media.