1. Distinguish between prim 2. Identify the important characteristics of secondary storage. 3. Describe hard disk platters, tracks, sectors, cylinders, and head crashes. 4. Compare internal and external hard drives. 5. Compare performance enhancements including disk caching, RAID, file compression, ary and secondary storage. and file decompression. 6. Define optical storage including compact discs, digital versatile discs, and Blu-ray discs. 7. Define solid-state storage including solid-state drives, flash memory cards, and USB drives. 8. Define cloud storage and cloud storage services. 9. Describe mass storage, mass storage devices, enterprise storage systems, and storage area networks