#1 Theory 8 Unit 8 Storage Devices Storage Devices.
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Transcript of #1 Theory 8 Unit 8 Storage Devices Storage Devices.
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##11
Theory 8Theory 8
Unit 8Unit 8
Storage DevicesStorage Devices
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##22
Theory 8Theory 8
PurposesPurposes
•Need non-volatile sourceNeed non-volatile source•Keep for later useKeep for later use•Transport to another Transport to another
place/computerplace/computer•Retain for archiveRetain for archive
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##33
Theory 8Theory 8
Types of Storage DevicesTypes of Storage Devices
•Floppy DiskFloppy Disk•Hard DiskHard Disk•CD-ROMCD-ROM•Back up DevicesBack up Devices
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##44
Theory 8Theory 8
Floppy DiskFloppy Disk
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##55
Theory 8Theory 8
Floppy Drive TypesFloppy Drive Types
•5.25” floppy disk (old)5.25” floppy disk (old)•3.5” floppy disk (now)3.5” floppy disk (now)
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##66
Theory 8Theory 8
Floppy Drive EquipmentFloppy Drive Equipment
•Disk driveDisk drive•DiskettesDiskettes
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##77
Theory 8Theory 8
Traditional UsesTraditional Uses
• Install New Programs Install New Programs (changing now)(changing now)
•Transfer dataTransfer data• Increase Hard Disk SpaceIncrease Hard Disk Space•Back Up DataBack Up Data
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##88
Theory 8Theory 8
Evolving UsesEvolving Uses
• Install small programs Install small programs onlyonly
•Transfer small amount of Transfer small amount of datadata
•(Other equipment (Other equipment replacing floppies!)replacing floppies!)
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##99
Theory 8Theory 8
Floppies SpecificationsFloppies Specifications
•CapacityCapacity–Double-Density Double-Density (DS/DD)(DS/DD)
–High-Density (HD)High-Density (HD)•Pre-formattedPre-formatted
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##1010
Theory 8Theory 8
Protecting a FloppyProtecting a Floppy
•Write protectionWrite protection•Store in containerStore in container•Protect from environmentProtect from environment
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##1111
Theory 8Theory 8
Hard diskHard disk
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##1212
Theory 8Theory 8
Note Regarding TermsNote Regarding Terms
•DiskDisk•DriveDrive•Used interchangeably!Used interchangeably!
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##1313
Theory 8Theory 8
Hard Disk EquipmentHard Disk Equipment
•Hard disk enclosed in Hard disk enclosed in protective shellprotective shell
•Software to formatSoftware to format•No external access!No external access!
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##1414
Theory 8Theory 8
Uses of Hard DriveUses of Hard Drive
•Store filesStore files–Program FilesProgram Files–Data FilesData Files
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##1515
Theory 8Theory 8
Storing ProcessStoring Process
•Computer: controller Computer: controller •UserUser
–Create folders by topicCreate folders by topic–(Subdirectory)(Subdirectory)
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##1616
Theory 8Theory 8
Hard Drive SpecificationsHard Drive Specifications
•Capacity (Mb, Gb)Capacity (Mb, Gb)•Average Access Time Average Access Time
(ms)(ms)
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##1717
Theory 8Theory 8
Connection TypesConnection Types
• IDE (older)IDE (older)•EIDE (newer)EIDE (newer)•SCSI (high end)SCSI (high end)
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##1818
Theory 8Theory 8
Purposes of Disk CachePurposes of Disk Cache
•Speeds up computerSpeeds up computer•Stores recently used dataStores recently used data•Updated constantlyUpdated constantly
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##1919
Theory 8Theory 8
Create More Disk SpaceCreate More Disk Space
•Archive unneeded Archive unneeded informationinformation
•Delete filesDelete files•Compress dataCompress data
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##2020
Theory 8Theory 8
Hard Drive MaintenanceHard Drive Maintenance
•Optimize...Optimize...•Virus...Virus...•Back Up Data...Back Up Data...
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##2121
Theory 8Theory 8
Optimize a Hard DriveOptimize a Hard Drive
•Defragment a driveDefragment a drive•Scan disk to repair a driveScan disk to repair a drive
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##2222
Theory 8Theory 8
Ways to Get a VirusWays to Get a Virus
•Shared floppy diskShared floppy disk•Modem/InternetModem/Internet•Shareware programsShareware programs
•Protect with: Anti-Virus Protect with: Anti-Virus ProgramProgram
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##2323
Theory 8Theory 8
Back Up DataBack Up Data
•Back up data filesBack up data files•Back up frequentlyBack up frequently
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##2424
Theory 8Theory 8
Removable Hard DrivesRemovable Hard Drives
•(Back up option)(Back up option)•Archive DataArchive Data•Protect DataProtect Data•Transfer DataTransfer Data
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##2525
Theory 8Theory 8
CD-ROMCD-ROM
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##2626
Theory 8Theory 8
CD-ROM EquipmentCD-ROM Equipment
•CD-ROM DriveCD-ROM Drive•SoftwareSoftware•CD-ROM DiscCD-ROM Disc
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##2727
Theory 8Theory 8
Uses for CDsUses for CDs
• Install softwareInstall software•Run program from CDRun program from CD•Any multimedia Any multimedia
applicationapplication•Play Music CDsPlay Music CDs
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##2828
Theory 8Theory 8
Programs on CDsPrograms on CDs
• ChildrenChildren• EducationEducation• GamesGames• ReferenceReference
• General General InterestInterest
• Time-Time-Sensitive Sensitive informationinformation
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##2929
Theory 8Theory 8
Factors in CD-ROMsFactors in CD-ROMs
•SpeedSpeed•Average Access TimeAverage Access Time•Multisession (read info Multisession (read info
stored over other info!)stored over other info!)
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##3030
Theory 8Theory 8
Using the CD-ROMUsing the CD-ROM
•Insert in trayInsert in tray•Handle from edgesHandle from edges•Use jewel caseUse jewel case
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##3131
Theory 8Theory 8
New CD-ROM ItemsNew CD-ROM Items
•Recordable CDsRecordable CDs•DVD-ROMDVD-ROM
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##3232
Theory 8Theory 8
Backup DevicesBackup Devices
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##3333
Theory 8Theory 8
Traditional Tape DriveTraditional Tape Drive
•Drive unitDrive unit•SoftwareSoftware•Cartridges ($$)Cartridges ($$)
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##3434
Theory 8Theory 8
Tape DriveTape Drive
•Tape cartridgesTape cartridges•ApplicationsApplications
–Back up dataBack up data–Archive dataArchive data–Transfer dataTransfer data
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##3535
Theory 8Theory 8
Other DevicesOther Devices
•TraditionalTraditional–QIC DriveQIC Drive–Travan DriveTravan Drive–DAT DriveDAT Drive
•NewNew–Zip DriveZip Drive
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##3636
Theory 8Theory 8
Backup TipsBackup Tips
•Schedule Backups -- like Schedule Backups -- like brushing your teethbrushing your teeth
•Data CompressionData Compression•Record date of purchaseRecord date of purchase
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##3737
Theory 8Theory 8
Types of BackupsTypes of Backups
•FullFull• IncrementalIncremental