Advantages and Disadvantages of Magnetic Disk | NEtechy

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Advantages and Disadvantages of Magnetic Disk

Advantages and Disadvantages of Magnetic Disk Advantages and Disadvantages of Magnetic Disk

Advantages and Disadvantages of Magnetic Disk

Advantages and Disadvantages of Magnetic Disk

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    • [Definition of Magnetic Disk]
    • A magnetic disk is a storage device that uses a magnetization process to read, write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots, and sectors. Hard disks, zip disks, and floppy disks are common examples of magnetic disks.

Magnetic Disk

Magnetic storage or magnetic recording is the storage of data on a magnetized medium. Magnetic storage uses different patterns of magnetization in a magnetizable material to store data and is a form of non-volatile memory. The information is accessed using one or more read/write heads.

As of 2017, magnetic storage media, primarily hard disks, are widely used to store computer data as well as audio and video signals. In the field of computing, the term magnetic storage is preferred and in the field of audio and video production, the term magnetic recording is more commonly used. The distinction is less technical and more a matter of preference. Other examples of magnetic storage media include floppy disks, magnetic recording tape, and magnetic stripes on credit cards.

Advantages of Magnetic Disk:
  1. Provide very fast data access because it is direct access storage medium.
  2. Provide low cost storage medium.
  3. Rewriteable storage medium, help to quickly write the new updated information over area where old information was written.
  4. Files on Magnetic Disk can be stored in an interrelated manner, which help to update a common transaction in all required files simultaneously, without re-entry of transaction to individual files.
  5.  Provide large storage capacity to store large data volume, multiple magnetic disks can also be used together to provide large memory capacity.
  6. Used as a storage medium for online real - time data processing applications like in banks, etc.
  7. Hard Disk is used as online storage device for access and storage of data.
  8. Due to its random access property, magnetic disks are often used as online secondary storage devices, in which case they store data of multiple users of the computer system. A tape is not suitable for such type of usage, due to its sequential-access property.
  9. Due to their low cost and high data recording densities that magnetic dis, the cost per bit of storage is low for magnetic disks. An additional cost benefit is that magnetic disks can be erased and reused many times.
  10. Data transfer rate for a magnetic disk system is normally higher than a tape system.

Disadvantages of Magnetic Disk:

  1. When new data is stored on a Magnetic Disk, It is stored with a technique known as overlying; where in new data is stored on old data as a new layer. This type of writing data does not provide audit trail of previous stored data.
  2. Magnetic Disk is a fixed type of disk; it cannot be moved easily from one place to another, Therefore, It is difficult to use magnetic disk as a portable memory.
  3. It is more difficult to maintain the security of information stored on magnetic disks, which are used as shared, online secondary storage devices as compared to information stored on magnetic tapes or on other types of magnetic disks.
  4. On a cost-per-bit basis, the cost of magnetic disks is low, but the cost of magnetic tapes is even lower.
  5. Floppy disks, zip disks and disk packs should be labelled properly to prevent erasure of useful data by mistake.
  6. They must be stored in a dust-free environment.

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NEtechy: Advantages and Disadvantages of Magnetic Disk
Advantages and Disadvantages of Magnetic Disk
Advantages and Disadvantages of Magnetic Disk Advantages and Disadvantages of Magnetic Disk
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