b.1.5 secondary storage
Where does your homework go when the power cuts out? Compare the speed, cost, and durability of magnetic, optical, and solid-state storage to find the best place for your data.
RAM is fast, but it has one big problem: it forgets everything the moment you turn the power off. That’s why we need Secondary Storage. This is the long-term memory of the computer. We compare the old-school reliability of magnetic Hard Drives (cheap and huge capacity) with the lightning speed of modern Solid State Drives (SSDs). We also look at The Cloud - storing your stuff on someone else's computer accessed via the internet - and help you decide which storage is best for your gaming rig, your phone, or your schoolwork.
🧐 Sorry, I looked and there is nothing to see.
This section details the progression for Secondary Storage. The mapping moves from basic user-level identification of hardware in Key Stage 2 to highly technical architectural planning in Key Stage 5 and beyond. By explicitly contrasting volatile and non-volatile memory, quantifying data needs through mathematical calculation, and introducing robust enterprise solutions like RAID and SAN architectures, students develop a comprehensive understanding of data retention, security, and infrastructure resilience.
Last modified: March 20th, 2026
