PLATTER
The actual storage media in the different type of disk. In the hard drive the platter have a core of glass or aluminium, covered with a thin layer of Ferric oxide or an Cobalt alloy (Co-Ni, Co-Cr, Co-Ni-W). This layer is protected by a layer of a very hard material (overcoat), and a thin layer of lubricant. A CD is a plastic disc in which the data is impressed. It has a metallic, reflecting backside.
ALSO SEE: READ/WRITE HEAD, SHOCK DAMAGE, ECCENTRIC
|
|
