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Unit 8

Unit 8 Storage Devices Purposes Need non-volatile source Keep for later use Transport to another place/computer Retain for archive Types of Storage Devices Floppy Disk Hard Disk CD-ROM Back up Devices Floppy Disk Floppy Drive Types 5.25” floppy disk (old) 3.5” floppy disk (now)

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Unit 8

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  1. Unit 8 • Storage Devices

  2. Purposes • Need non-volatile source • Keep for later use • Transport to another place/computer • Retain for archive

  3. Types of Storage Devices • Floppy Disk • Hard Disk • CD-ROM • Back up Devices

  4. Floppy Disk

  5. Floppy Drive Types • 5.25” floppy disk (old) • 3.5” floppy disk (now)

  6. Floppy Drive Equipment • Disk drive • Diskettes

  7. Traditional Uses • Install New Programs (changing now) • Transfer data • Increase Hard Disk Space • Back Up Data

  8. Evolving Uses • Install small programs only • Transfer small amount of data • (Other equipment replacing floppies!)

  9. Floppies Specifications • Capacity • Double-Density (DS/DD) • High-Density (HD) • Pre-formatted

  10. Protecting a Floppy • Write protection • Store in container • Protect from environment

  11. Hard disk

  12. Note Regarding Terms • Disk • Drive • Used interchangeably!

  13. Hard Disk Equipment • Hard disk enclosed in protective shell • Software to format • No external access!

  14. Uses of Hard Drive • Store files • Program Files • Data Files

  15. Storing Process • Computer: controller • User • Create folders by topic • (Subdirectory)

  16. Hard Drive Specifications • Capacity (Mb, Gb) • Average Access Time (ms)

  17. Connection Types • IDE (older) • EIDE (newer) • SCSI (high end)

  18. Purposes of Disk Cache • Speeds up computer • Stores recently used data • Updated constantly

  19. Create More Disk Space • Archive unneeded information • Delete files • Compress data

  20. Hard Drive Maintenance • Optimize... • Virus... • Back Up Data...

  21. Optimize a Hard Drive • Defragment a drive • Scan disk to repair a drive

  22. Ways to Get a Virus • Shared floppy disk • Modem/Internet • Shareware programs • Protect with: Anti-Virus Program

  23. Back Up Data • Back up data files • Back up frequently

  24. Removable Hard Drives • (Back up option) • Archive Data • Protect Data • Transfer Data

  25. CD-ROM

  26. CD-ROM Equipment • CD-ROM Drive • Software • CD-ROM Disc

  27. Uses for CDs • Install software • Run program from CD • Any multimedia application • Play Music CDs

  28. Children Education Games Reference General Interest Time-Sensitive information Programs on CDs

  29. Factors in CD-ROMs • Speed • Average Access Time • Multisession (read info stored over other info!)

  30. Using the CD-ROM • Insert in tray • Handle from edges • Use jewel case

  31. New CD-ROM Items • Recordable CDs • DVD-ROM

  32. Backup Devices

  33. Traditional Tape Drive • Drive unit • Software • Cartridges ($$)

  34. Tape Drive • Tape cartridges • Applications • Back up data • Archive data • Transfer data

  35. Other Devices • Traditional • QIC Drive • Travan Drive • DAT Drive • New • Zip Drive

  36. Backup Tips • Schedule Backups -- like brushing your teeth • Data Compression • Record date of purchase

  37. Types of Backups • Full • Incremental

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