1.2.2 - Secondary storage Flashcards
Why do computers need secondary storage?
It provides, non-volatile, long term storage for programs, applications and operating systems, etc.
What are the three main types of secondary storage?
Optical,
Magnetic,
Solid-State.
What is an example of optical storage?
CDs, DVDs, and Blu-ray discs.
What is an example of magnetic storage?
Hard Disk Drives (HDDs) and Magnetic Tape.
What is an example of solid-state storage?
Solid-State Drives (SSDs), USB Flash Drives, and Memory Cards.
What factors should you consider when choosing storage?
Capacity,
speed,
portability,
durability,
reliability,
cost.
What are the advantages of optical storage?
Discs are very thin,
Portable,
Also cheap/inexpensive,
Good for media storage.
What are the disadvantages of optical storage?
Low data capacity,
NOT durable because discs are very fragile and easily scratched,
Slowest data access speed.
What are the advantages of magnetic storage?
High capacity,
Cheap per GB,
Quick data access speed,
Reliable for long term storage.
What are the disadvantages of magnetic storage?
Slower than SSDs,
Moving parts can are susceptible to damage.
What are the advantages of solid-state storage?
High capacity,
Fastest data access speed,
Durable,
Portable because of small size,
What are the disadvantages of solid-state storage?
More expensive per GB,
Limited read/write cycles.
Which type of storage has the highest capacity?
Magnetic storage (HDDs and Magnetic Tape).
Which type of storage is the fastest?
Solid-state storage (SSDs and Flash Drives).
Which type of storage is the most portable?
Solid-state storage (USB Flash Drives and Memory Cards).
Which type of storage is the most durable?
Solid-state storage (SSDs and Flash Drives).
Which type of storage is the most reliable?
Solid-state storage (SSDs and Flash Drives).
Which type of storage is the cheapest per GB?
Magnetic storage (HDDs and Magnetic Tape).
