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What is Data Storage? - Definition & Technologies

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  • 0:03 Data Storage Overview
  • 1:00 Data Storage Technologies
  • 3:10 Lesson Summary
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Lesson Transcript
Instructor: Randall Panduren

Randy is an ITIL certified IT Manager and Technical Professional with more than 20 years' experience in Information Technology.

When using computers and other technology, data must be stored for use in the future. In this lesson, learn what data storage is, why it is important, and which technologies are used for storing data.

Data Storage Overview

Imagine for a moment that you lost your ability to remember anything - not what happened a minute ago, or yesterday, or five years ago. You wouldn't really be able to function, would you? Computers and other technologies work the same way. Without the ability to store and retrieve data, they aren't very useful. Whether writing an email, watching an online video, visiting a web site, or using technology in another way, there is a constant flow of digital information that needs to be stored in order for the technology to serve its purpose.

Data storage is a term for how information is kept in a digital format that may be retrieved at a later time. Computers, laptops, tablets, smartphones, and other devices all store data. The methods and technologies used vary greatly, but the basic concept is always the same: information is kept so that it can be accessed again later.

Data Storage Technologies

There are many different technologies used to store data, with new methods being created all the time. Some store data temporarily, and some for long periods of time. Many stay inside a computer or device, while others are portable and can be used on different devices or kept in other locations. There are many common technologies used to store data.

Let's go over some of them now:

Random Access Memory (RAM)

Also known simply as memory or computer memory, RAM is what computers use to hold information temporarily so it can be easily accessed by the computer as you work. It's a lot like your own short-term memory - things move in and out quickly and aren't kept permanently.

Hard Disk Drive

Most computers and laptops use pieces of hardware to store data. They typically remain inside the device and store information, such as computer programs and files. In contrast to RAM, hard disk drives store data permanently so it can be retrieved at a later time, much like your own long-term memory.

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