What are the components of hard disk?

Answer 1

Most of the enclosure is made out of a metallic alloy however the main part of a hard drive, which stores the data magnetically, is called the platter. In a hard drive there are normally several platters. Platters can store data on both sides requiring a head (reader) for each side.

The core of the platters are typically made using an aluminum or glass and ceramic substrate shaped into a disk. Then the disk is coated with a thin layer of a mostly nonmagnetic metallic alloy and on top of this is a protective carbon-based overcoat. Both of these layers are applied in the same process which is called sputtering. The next layer of the disk is a nanometer thin polymeric lubricant applied by dipping the disk into a solvent solution. The surface of the disk needs to be flawlessly smooth so that the disk head can rapidly move over the surface.

Scott

Answer 2

Platters: the are the storage media for the disk drive,

spindle: The spindle rotates the patters in unison,

Read/ write heads: reads or writes data,

Head arm, Actuator shaft,

Voice coil actuator: is used in many disk drives with capacities above 40MB,
Data connector: carries both the data ans the command signals from the controller and CPU to and from the disk drive,

Jumpers: are used to configure the drive as a master or slave on a shared interface, Power connector.

Answer 3

The data is stored magnetically. Disks are made of non-magnetic material (typically an aluminum alloy or glass) coated with a thin layer of magnetic material (a cobalt alloy for newer disks, for older ones iron oxide).

Answer 4

The magnetic plate on which data is stored, a read/write head, a logic board, connectors, a spindle motor, a pressure equalizer and some other parts, but these are the most important.

Answer 5

Circuit boards, Platters, Read/Write heads, a motor and connectors.

Answer 6

logical drives

Answer 7

Many memory drives.