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This lesson focuses on comparing different storage technologies in depth across the key criteria: capacity, speed, portability, durability, cost per GB and suitability for different uses. For the OCR H446 exam, you will often be asked to recommend storage for a given scenario and justify your choice.
| Criterion | What It Means |
|---|---|
| Capacity | How much data can the device store? |
| Speed | How fast can data be read from or written to the device? (includes access time and transfer rate) |
| Portability | How easy is it to carry or move the device? Consider physical size, weight and power requirements |
| Durability | How resistant is the device to physical damage, shock, heat, water? |
| Cost per GB | How much does each gigabyte of storage cost? Important for budget decisions |
| Reliability | How likely is the device to fail? What is its expected lifespan? |
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