Optical and Magnetic Storage

Why is there a need for secondary storage in a computer?

• To store files for a long period of time, such as the operating system
• To hold cd's and dvd's

Describe a disadvantage of using an internal hard disk as storage.

• Huge capacity, offers up to several terabytes per device.

• Not as portable as other technologies.

Identify an example of optical storage:

• Magnetic tape

• USB memory stick

• Blu-ray disks

• HDD

The disadvantage of this type of storage is that it is easily scratched, leading to the loss of data.

• Magnetic storage

• Optical storage

• Solid state storage

Normally used in digital cameras. ___ can hold thousands of jpg photographs.

• SD memory cards
• USB memory stick
• Magnetic tape
• CD

Why is durability important when choosing an appropriate storage media?

• Because it is important to take in consideration how resistant the media is to damage.

• Because it is important to consider how cheap the media cost.

The term capacity refers to

• the amount of data you can store on the device
• how shiny the device is
• how easily you can damage the device
• the speed of the device

The term durability refers to

• how easily you can damage the device
• the speed of the device
• the amount of data you can store on the device
• how shiny the device is

The term portability refers to

• how easy it is to carry around/transport the device
• the speed of the device
• the amount of data you can store on the device
• how shiny the device is

Secondary storage devices can be grouped into three categories - what are they?

• Magnetic, Flash and Optical

• Magnetic, Optical and Solid State

• Solid State, Flash and Hard Drives

• Hard Drives, CDs and USBs