1.3.5 Memory, Storage Devices and Media

• show understanding of the difference between: primary, secondary and off-line storage and
provide examples of each, such as, primary: Read Only Memory (ROM), Random Access Memory
(RAM) and DVD-RAM; secondary: hard disk drive (HDD) and Solid State Drives (SSDs); off-line:
Digital Versatile Disks (DVDs), Compact Disks (CDs), Blu-ray, USB flash memory and removable
disks
• describe the principles of operation of a range of types of storage devices and media including
magnetic, optical and solid state
• describe how these principles are applied to currently available storage solutions, such as SSDs,
hard disk drives, USB flash memory, DVDs, CDs and Blu-ray
• calculate the storage requirement of a file