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State and explain the Physical storage considerations.

State and explain the Physical storage considerations.

Answers

Kavungya
Recording density – The no. of useful storage cells per unit of length or area.
For example,
- The no. of characters per inch on a magnetic tape or punched card.
- The no. of bits in a single linear track measured per unit of length of the recording medium.

Volume - A term used for any individual physical storage medium that can be written to or read from. E.g., a fixed hard disk, floppy disk, CD-ROM, a disk cartridge or tape cartridge.

Formatting - Before a diskette can be used, it must be formatted. This prepares the disk so that the drive can use it.

Initialization - Before a disk is recorded, it has to be initialized, i.e., writing zeros to every byte on every track. This eliminates all trace of any existing data.

Fragmentation - When data is written on a newly formatted disk, it is usually written to unused contagious sectors. If data is erased, then the deleted sectors may leave spaces among used sectors. Overtime, after many inserts and deletes, these free sectors may be scattered across the disk. In such a phenomenon, the disk is said to be fragmented.
Kavungya answered the question on April 2, 2019 at 06:58

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