Optical Disk vs. Magnetic Disk
Definition of Optical Disk
It is a device that stores information on the computer and on the system, which comes in a round and flat shape and rotates along the axis to give access to all parts of the information to the user. It is known as an optical disk and becomes different from other kinds by the laser beam present on the surface that allows for the data to become readable whenever required and to write things on personal choice. The first type of such device was made in the 1960’s and used a micron-wide dot system of light and dark spots. A laser was used to read the information stored in the dots and then converted into a signal of electricity that gave an audio or visual output depending on the requirement. No progress was made in these systems for a long time and gained more fame when the first compact disk came in the market around 1982. An optical disk has the capacity of storing much more data as compared to other devices and that originates from the fact that with the help of laser beams, people can have more controlled and focused system. This function allows more data storage in the same space. Initially, data up to few hundred MBs was stored on such devices but now with the emergence of Blu-ray space up to 27 GB is available to perform the tasks.
Definition of Magnetic Disk
It is a device that stores information on the computer and on the system, which comes in a round and flat shape and rotates along the axis to give access to all parts of the information to the user. It is known as a magnetic disk because it uses the magnetization process to read and write data on the system. Another use of this is the rewriting and accessing the information in a fast manner. A magnetic disk mostly uses a rotating magnetic surface and an arm that helps it to rotate around its axis for the data to become readable. The mechanical arm is the primary tool that uses the handle to read data from the device and write data to the disk. The data gets controlled through the magnetization process, and therefore these types of drives become an integral part of a computer. Data arranges itself on the device in the form of tracks and sectors; the first ones are the circular divisions on the disks that become separated as segments that contain blocks of data. Therefore, all the read and write operations on the magnetic disk performed in these areas. Objects up to around several hundred GBs get stored on such devices, and they do not require any such speedups. The speeds range up to 100 MB per second and will get improved a lot in the future.