4.7.4.2 secondary storage devices

4.7.4.2 Secondary storage devices

Secondary storage is non-volatile and used to store files and applications.

Hard Disk Drive

• Consist of a number of platters made from a magnetic material
• above each platter hovers and actuating arm on which is a read/write head
• the read/write head changes the magnetic polarity of parts of the platter. The actuating arm allows it to access all portions of the platter
• data is written in concentric…