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31 Cards in this Set
- Front
- Back
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2 types of storage
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primary
secondary |
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characteristics of secondary storage
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media
capacity storage devices access speed |
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data and programs are retained
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secondary storage
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3 types of secondary storage
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magnetic disks/hard disks
optical disks solid-state storage |
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rigid, metallic platters
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magnetic/hard disks
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files are organized (hard disks)
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tracks
sectors cylinders |
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2 types of hard disks
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internal
external |
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disaster for hard disks
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head crash
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causes of head crash
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dust particle
smoke particle fingerprints human hair |
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inside the system unit
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internal (C: drive)
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removable hard disks
unlimited amount of additional storage |
external hard disks
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performance enhancements
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disk caching
RAID-redundant array of inexpensive disks file compression and decompression |
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improve performance
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disk caching
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expand storage, improve access speed
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RAID
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increase capacity
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file compression and decompression
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stores over 100 GB of data
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optical disks
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attributes of optical disks
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lands
pits |
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3 types of optical disks
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compact disc
digital versatile disc blu-ray disc |
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compact disk storage
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650 MB-1 GB
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3 basic types of CD
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read-only(CD-ROM)
write-once(CD-R) Rewrittable(CD-RW) |
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DVD storage
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4.7 GB-17 GB
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3 types of DVD
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read-only(DVD-ROM)
write-once(DVD-R) Rewrittable(DVD-RWm DVD+RW, DVD-RAM) |
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next generation DVD
high-definition video recording |
Blu-ray discs
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blu-ray discs
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25 GB-100GB
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3 types of solid state storage
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solid-state drives
flash memory cards USB drives |
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USB drives storage
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1 GB-256 GB
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digital video creation
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flash-based camcorders
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internet acts as a cloud servers
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cloud computing
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easier to upload & share files
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cloud storage devices
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tremendous amount of secondary storage
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mass storage
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specialized strategies and devices
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file servers
RAID systems organizational cloud storage network attached storage (NAS) tape libraries storage area network (SAN) |
