Secondary Storage (OCR GCSE Computer Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Purpose of secondary storage
Purpose of secondary storage
Store files & programs when not in use
Three categories of secondary storage
Three categories of secondary storage
Optical, Magnetic, Solid State
Key property of secondary storage
Key property of secondary storage
Long-term, non-volatile
How optical storage writes data
How optical storage writes data
Lasers write data to disk surface
Examples of optical media
Examples of optical media
CD, DVD, Blu-Ray
Key feature of solid state storage
Key feature of solid state storage
No moving parts
Examples of solid state storage
Examples of solid state storage
USB drives, memory cards, SSDs
6 factors when choosing storage
6 factors when choosing storage
Capacity, speed, portability, durability, reliability, cost
HDD capacity
HDD capacity
Up to several terabytes
SSD speed compared to HDD
SSD speed compared to HDD
Much faster than HDDs
CD capacity
CD capacity
Up to 700 MB
DVD capacity
DVD capacity
Up to 4.7 GB
Blu-ray capacity
Blu-ray capacity
Up to 50 GB
USB flash drive max capacity
USB flash drive max capacity
Up to 1 TB
Cloud storage capacity
Cloud storage capacity
Potentially unlimited