What are secondary storage devices?

The standard in the 21st century is for computers to come equipped with a certain amount of storage on their hard drives. Typical sizes are 160 GB (gigabytes), 250 GB, or 500 GB. By the standards of the original disk drives in 1956, which could hold 5 megabytes (MB), they are gigantic. The size of applications and certain types of files, such as multimedia files, however, means that even these large hard drives can quickly fill up. Also, it is often necessary to back up for security reasons. For these reasons, external storage solutions, sometimes called secondary storage devices, are often used.

A USB thumb drive, a type of secondary storage device.

Over the years, a variety of secondary storage devices have been designed and used. Some are much less popular at present, including vacuum tubes, punch cards and punch tapes, and magnetic drums. Floppy disks, also called floppy disks, both 5 1/4 inches (13.335 cm) and 3 and 1/2 inches (8.89 cm) came and went in the 20th century. Zip disks, which are similar in dimensions to smaller floppy disks, survive and store between 100 and 750 MB of data, as does the REV disk, which stores up to 90 GB of data. Magnetic tape remains a storage device, having been used for over 50 years.

An external hard drive.

Various types of CDs and DVDs are commonly used secondary storage devices. Both are types of optical discs, written and read by means of light. They are three types. Reading examples include CDs, CD-ROMS, DVD-ROMS and DVD-Videos. Examples of Write Once Read Many (WORM) include CR-Rs, DVD-Rs, DVD+Rs, and WORMs. Finally, optical secondary storage devices include CD-RWs, DVD-RAMS, DVD-RWs, DVD+RWs and MOs.

See also  What is information overload?

Secondary storage devices can include zip drives.

Other storage devices include external hard drives. They can be mobile or desktop models. Some are made not just for storage, but also for streaming music, movies or photos to multimedia devices like Xbox 360® or PlayStation® 3.

Smart phones and digital cameras store digital information on micro SD cards.

USB Flash drives come in many models and store from 512MB to 256GB, the storage capacity of the Kingston® DataTraveler® 300, which the manufacturer claims is the largest USB Flash drive in the world. These secondary storage devices are also known as flash drives, thumb drives, thumb drives and by other names. Many USB Flash drives must be attached to a key fob or slung around your neck like a lanyard.

CDs can be used as a secondary storage device.

Flash drives are used as a portable storage device.

Floppy disks are secondary storage devices.

Leave a Comment