The advantages and disadvantages of different storage devices and storage media relating to these characteristics: Capacity, speed, portability, durability, reliability, cost

Each storage type has advantages and disadvantages relating to capacity, speed, portability, durability, reliability, and cost. Understanding these trade-offs is essential for choosing appropriate storage for different scenarios.

Key points

• HDD: High capacity, cheap per GB, good for desktops/servers. But bulky, easily damaged by movement, slower than SSDs.
• SSD: Very fast read/write, no moving parts, lightweight and durable. But expensive per GB and relatively lower capacity.
• Optical: Very cheap per disc, small and portable. But very low capacity, easily scratched/damaged, slow read/write speeds.
• Exam Tip:Questions often ask you to compare TWO types. Structure your answer: advantage of Type A vs disadvantage of Type B for each characteristic.
• Definition:Durability: how well a device withstands physical damage. SSDs are most durable (no moving parts). HDDs are least durable (moving read/write head).
• Definition:Portability: how easily a device can be carried. SSDs and optical discs are most portable. HDDs are bulky and heavy.