Research: HDD [Day 21/22/23]

Hard disk drives(HDD) is the hardware that stores all forms of data by using rapidly rotating disks coated with magnetic material.The HDD has 9 major component which are the platter, spindle, head, actuator arm, actuator axis, power connector, jumper block, IDE connector, and the actuator. Unlike RAM, the HDD is able to keep its data even when the power is cut from it. What makes the HDD and RAM alike however, is that it reads the data in a random-access manner. Data recorded by HDD is done by magnetizing a thin film of ferromagnetic material on to the disk. The data is then read by detecting the transitions in magnetization of the disk. Information is being processed as it rotates past the device called read-and-write heads that operates close over the magnetic surface which in turn detects and modifies the magnetization of the material under it immediately.