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ComputerComputerSTORAGESTORAGE
There are two types of There are two types of storagestorage
PrimaryPrimary- Ram (hard-drive)- Ram (hard-drive) SecondarySecondary- Permanent or - Permanent or
nonvolatile storage nonvolatile storage
Secondary Storage Secondary Storage is used tois used to
SaveSave
Secondary Storage Secondary Storage is used tois used to
SaveSaveBack upBack up
Secondary Storage Secondary Storage is used tois used to
SaveSaveBack upBack upTransport filesTransport files
Floppy Disk (Floppy Disk (diskettes)diskettes)
3 1/2 - inch dis3 1/2 - inch dis
Floppy Disk (Floppy Disk (diskettes)diskettes)
3 1/2 - inch disk3 1/2 - inch disk 1.44 MB1.44 MB
High-Capacity Floppy DisksHigh-Capacity Floppy DisksFloppy-disk cartridgesFloppy-disk cartridges
100 MB100 MB
High-Capacity Floppy DisksHigh-Capacity Floppy DisksFloppy-disk cartridgesFloppy-disk cartridges
100 MB100 MB250 MB250 MB
High-Capacity Floppy DisksHigh-Capacity Floppy DisksFloppy-disk cartridgesFloppy-disk cartridges
100 MB100 MB250 MB250 MB750 MB750 MB
Internal Hard Disk Internal Hard Disk (fixed disk)(fixed disk)
Designated C driveDesignated C drive
Internal Hard Disk Internal Hard Disk (fixed disk)(fixed disk)
Designated C driveDesignated C drive StoresStores
Operating systemOperating system Major applicationsMajor applications
Removable Hard-diskRemovable Hard-disk(hard-disk cartridges)(hard-disk cartridges)
Storage depends on Storage depends on the number of the number of cartridges (unlimited)cartridges (unlimited)
Hard-Disk PacksHard-Disk Packs
Removable StorageRemovable Storage
Hard-Disk PacksHard-Disk Packs
Removable StorageRemovable StorageStores massive amountsStores massive amounts
Optical DisksOptical Disks
17 gigabytes of data17 gigabytes of data
Optical DisksOptical Disks
17 gigabytes of data17 gigabytes of dataMed sz. Library on 1 diskMed sz. Library on 1 disk
Compact DiscCompact Disc
Stores 650 MB to 1 GBStores 650 MB to 1 GB
Compact DiscCompact Disc
Stores 650 MB to 1 GBStores 650 MB to 1 GB3 Types3 Types
Compact DiscCompact Disc
Stores 650 MB to 1 GBStores 650 MB to 1 GB3 Types3 Types
Read onlyRead only
Compact DiscCompact Disc
Stores 650 MB to 1 GBStores 650 MB to 1 GB3 Types3 Types
Read onlyRead onlyWrite onceWrite once
Compact DiscCompact Disc
Stores 650 MB to 1 GBStores 650 MB to 1 GB3 Types3 Types
Read onlyRead onlyWrite onceWrite onceRewriteableRewriteable
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB17x the capacity of CD’s17x the capacity of CD’s
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB17x the capacity of CD’s17x the capacity of CD’s3 Types3 Types
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB17x the capacity of CD’s17x the capacity of CD’s3 Types3 Types
Read only: DVD-ROMRead only: DVD-ROM
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB17x the capacity of CD’s17x the capacity of CD’s3 Types3 Types
Read only: DVD-ROMRead only: DVD-ROMWrite once: DVD+R, DVD-RWrite once: DVD+R, DVD-R
DVDDVD(digital versatile / video disc)(digital versatile / video disc)
Stores 4.7 GB to 17 GBStores 4.7 GB to 17 GB17x the capacity of CD’s17x the capacity of CD’s3 Types3 Types
Read only: DVD-ROMRead only: DVD-ROMWrite once: DVD+R, DVD-RWrite once: DVD+R, DVD-RRewriteable: DVD+RW, DVD-RW, DVD-RAMRewriteable: DVD+RW, DVD-RW, DVD-RAM
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical disc
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
15 to 30 GB15 to 30 GB
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
15 to 30 GB15 to 30 GBCan be easily mass producedCan be easily mass produced
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
15 to 30 GB15 to 30 GBCan be easily mass producedCan be easily mass produced
Blu-RayBlu-Ray
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
15 to 30 GB15 to 30 GBCan be easily mass producedCan be easily mass produced
Blu-RayBlu-Ray25 to 50 GB25 to 50 GB
HI-Definition DiscsHI-Definition Discs
The next generation of optical discThe next generation of optical discHD DVDHD DVD
15 to 30 GB15 to 30 GBCan be easily mass producedCan be easily mass produced
Blu-RayBlu-Ray25 to 50 GB25 to 50 GBNot easily mass producedNot easily mass produced
Other types of storage…Other types of storage…
Flash Memory CardsFlash Memory Cards
Notebook computersNotebook computers
Flash Memory CardsFlash Memory Cards
Notebook computersNotebook computersDigital camerasDigital cameras
Flash Memory CardsFlash Memory Cards
Notebook computersNotebook computersDigital camerasDigital camerasMP3 music files MP3 music files
Flash DrivesFlash Drives
256 MB to 1 GB256 MB to 1 GB
Internet Hard DriveInternet Hard Drive
A.K.AA.K.AOnline StorageOnline Storage i-drivei-drive
Works CitedWorks Cited
O’Leary, Timothy J., O’Leary, Linda I. O’Leary, Timothy J., O’Leary, Linda I. Computing EssentialsComputing Essentials. New York: . New York: McGraw-Hill, 2007.McGraw-Hill, 2007.
