Secondary Storage

Magnetic Storage Technology

Using material with magnetic properties (ability to change polarity to store data).

Optical Storage Technology

Using reflective materials to store data by burning ‘pits‘ and leaving ‘land‘. Data is read by shining a laser and observing which elements reflect.

Solid State Storage Technology

Using circuitry, which traps electrons in specific orders to store data.

What type of storage uses magnetisable material to represent data as patterns?

Magnetic Storage.

What do magnetised points represent in magnetic storage?

‘1‘.

What do demagnetised points represent in magnetic storage?

‘0‘.

What is an obsolete type of magnetic storage?

Floppy disks.

How does optical storage read data?

By shining a laser on the surface and detecting reflections from pits and lands.

What is the capacity of a standard CD?

700MB.

What is a characteristic of solid state storage?

Fastest access speed because they contain no moving parts.

What types of devices are examples of solid state storage?

USB flash drives, SD cards, or micro SD cards.

What storage type is a stand-alone external hard drive at the center of a network?

Network Attached Storage (NAS).

What is cloud storage?

A method of storing documents and media files online accessible through the internet.