Secondary Storage

Question 1

Define Secondary Storage

Answer 1

-Devices that provide permanent storage

Question 2

Define the need for Secondary Storage

Answer 2

• High Capacity, Low Cost
• Fast at loading and saving files
• Needs to be reliable
• Budget Friendly

-External: transfer files from one c to another

Question 3

Define Magnetic Disk

Answer 3

-Fragmentation: each part of files in sperate location

• Metal Platters
• Polarised
• Concentric Tracks
• Sectors
• Group of Sectors is a Cluster
• Location in File Allocation Record
• RW Arm tiny magnet
• Does not Touch

Platapus Prnstar Cosplays Senora Cluster Fcker although maybe no touching

Question 4

Define SSD

Answer 4

Solid State Disk

• Controller
• NAND memory cells
• Pages = cells in grid
• Block = row
• Block updated by main memory, moved to new area, original erased
• Slower the more full up

Charlie Now meets Police Constable Blake Rory, Blake’s Meat Small

Question 5

Define Optical Discs

Answer 5

• Thin Aluminium Reflective Layer
• R RW discs have chemical layer
• Continuous Spiral Track
• Pits and Lands
• R Laser beam
• W Higher intensity beam

Alice Lays Close To Pitts Lovingly

Question 6

Compare Secondary Storage Devices

Answer 6

Magnetic:

• Capacity and Cost
• Gap Between technologies
• Not Portable
• Moving Parts
• Desktop

SSD:

• Speed of Access
• No Moving Parts
• Reduced Energy and Heat
• Limited Life Span

Optical:

• Scratches
• Not good in heat
• Damaged By Light
• Lack of Drives
• Light and Portable
• Easy to make