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Objectives Overview

Objectives Overview. See Page 237 for Detailed Objectives. Objectives Overview. See Page 237 for Detailed Objectives. Storage. Pages 238 - 239. Storage. Pages 238 – 239 Figure 6-1. Storage. Capacity is the number of bytes a storage medium can hold. Page 240 Figure 6-2. Storage.

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Objectives Overview

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  1. Objectives Overview See Page 237 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 6

  2. Objectives Overview See Page 237 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 6

  3. Storage Pages 238 - 239 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  4. Storage Pages 238 – 239 Figure 6-1 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  5. Storage • Capacity is the number of bytes a storage medium can hold Page 240 Figure 6-2 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  6. Storage • A storage deviceis the computer hardware that records and/or retrieves items to and from storage media Page 240 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  7. Storage • Access timemeasures: • The amount of time it takes a storage device to locate an item on a storage medium • The time required to deliver an item from memory to the processor Page 240 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  8. Hard Disks • A hard diskcontains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information Pages 240 - 241 Figure 6-3 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  9. Hard Disks • Hard disks can store data using longitudinal recording or perpendicular recording Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click Perpendicular Recording below Chapter 6 Page 356 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  10. Hard Disks • Characteristics of a hard disk include: Page 242 Figure 6-5 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  11. Hard Disks Page 243 Figure 6-6 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  12. Hard Disks • The hard disk arms move the read/write head, which reads items and writes items in the drive • Location often is referred to by its cylinder Page 243 Figure 6-7 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  13. Hard Disks • A head crash occurs when a read/write head touches the surface of a platter • Always keep a backup of your hard disk Page 244 Figure 6-8 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  14. Hard Disks • RAID (redundant array of independent disks) is a group of two or more integrated hard disks • A network attached storage(NAS) device is a server connected to a network with the sole purpose of providing storage Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click Network Attached Storage below Chapter 6 Page 244 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  15. Hard Disks Pages 244 – 3245 Figures 6-9 – 6-10 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  16. Hard Disks • A disk controller consists of a special-purpose chip and electronic circuits that control the transfer of data, instructions, and information from a disk to and from the system bus and other components of the computer Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click eSATA below Chapter 6 Page 246 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  17. Flash Memory Storage • Flash memory chips are a type of solid state media and contain no moving parts • Solid state drives (SSDs) have several advantages over magnetic hard disks: Page 247 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  18. Flash Memory Storage Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click Solid State Drives below Chapter 6 Page 247 Figure 6-12 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  19. Flash Memory Storage • A memory cardis a removable flash memory device that you insert and remove from a slot in a computer, mobile device, or card reader/writer Page 248 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  20. Flash Memory Storage Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click SDHC Cards below Chapter 6 Pages 248 - 249 Figures 6-13 – 6-14 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  21. Flash Memory Storage • USB flash drivesplug into a USB port on a computer or mobile device Page 250 Figure 6-15 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  22. Video: Thumb Drive (USB Flash Drive) Encryption CLICK TO START Discovering Computers Fundamentals, 2010 Edition Chapter 6

  23. Flash Memory Storage • An ExpressCard moduleis a removable device that fits in an ExpressCard slot • Commonly used in notebook computers Page 250 Figure 6-16 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  24. Cloud Storage • Cloud storageis an Internet service that provides storage to computer users Page 251 Figure 6-17 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  25. Cloud Storage Page 251 Figure 6-18 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  26. Cloud Storage • Users subscribe to cloud storage for a variety of reasons: Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click Cloud Storage below Chapter 6 Page 252 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  27. Optical Discs • An optical disc consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser • Typically store software, data, digital photos, movies, and music • Read only vs. rewritable Pages 252 - 253 Figure 7-25 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  28. Optical Discs • Care of optical discs Page 253 Figure 6-20 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  29. Optical Discs Pages 253 - 255 Figure 6-21 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  30. Optical Discs Page 255 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  31. Optical Discs Page 255 Figure 6-23 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  32. Optical Discs Click to view Web Link,click Chapter 6, Click Web Link from left navigation, then click Blu-ray below Chapter 6 Pages 253 – 256 Figure 6-21 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  33. Other Types of Storage Page 256 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  34. Other Types of Storage • Tape is a magnetically coated ribbon of plastic capable of storing large amounts of data and information • A tape drivereads and writes data and information on a tape Page 257 Figure 6-26 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  35. Other Types of Storage • A magnetic stripe cardcontains a magnetic stripe that stores information • A smart cardstores data on a thin microprocessor embedded in the card Page 257 Figure 6-27 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  36. Other Types of Storage • Microfilm and microfiche store microscopic images of documents on a roll or sheet film Page 258 Figure 6-28 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  37. Other Types of Storage Page 258 Figure 6-29 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  38. Other Types of Storage • Enterprise storage stores huge volumes of data and information for large businesses • Uses special hardware for heavy use, maximum availability, and maximum efficiency Pages 258 - 259 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  39. Putting It All Together Page 259 Figure 6-30 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  40. Putting It All Together Page 259 Figure 6-30 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  41. Summary Page 260 Discovering Computers Fundamentals, 2010 Edition Chapter 6

  42. Chapter 6 Complete

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