Let begin with definition of storage. Storage holds data, instructions and information for future use. A storage medium is the physical material on which a computer keeps data, instuctions and information. Capacity is the number of bytes a storage medium can hold.
- kilobyte (KB): 1 thousand
- megabyte (MB): 1 million
- gigabyte (GB) : 1 billion
- terabyte (TB): 1 trillion
- petabyte (PB): 1 quadrillion
- exabyte (EB): 1 quintillion
- zattabyte (ZB): 1 sextillion
- yottabyte (YB): 1 septillion
- hard disks
- flash memory storage
- cloud storage
- optical dics
- other type of storage (tape, magnetic stripe card, smart card, microfilm, microfiche
Characteristics of a hard disk include:
- capacity
- platters
- read/writes heads
- cylinders
- transfer rate
- access time
A memory card is a removable flash memory device that you insert and remove from a slot in a computer, mobile device, or card reader/writer.
Cloud storage is an Internet service that provides storage to computer users. Advantages of cloud storage are:
- access files from any computer
- storage large files instantaneously
- allow others to access their files
- store offsite backups
- view time-critical data and images immediately
- provide data center functions
An Optical disc consists of a flat, round, portable disc made of metal, plastic and lacquer that is written and read by a laser. It typically store software, data, digital photos, movies, and music.
- CD-ROM
- CD-R
- CD-RW
- DVD-ROM
- Blue-ray Disc-ROM (BD-ROM)
- DVD-RW, DVD+RW, DVD+RAM
Tape is a magnetically coated ribbon of plastic capable of storing large amounts of data and information.
A magnetic stripe card contains a magnetic stripe that stores information.
A smart card stores data on a thin microprocessor embedded in the card.
Microfilm and microfiche store microscopic images of documents on a roll or sheet film.
My name is Azrina Azman
Kuching, Sarawak
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