Advanced Database Management System - Tutorials and Notes: Secondary Storage Devices

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Friday, 8 July 2016

Secondary Storage Devices

List of secondary storage devices, Different type of secondary storage devices


Secondary Storage

  • Data to be used, should be transferred into the primary storage devices first.
  • Moderate cost.
  • Speeds of these devices are based on the Data Transfer rate of individual devices.
Device
Storage Capacity
Volatile / Non-volatile
How data written?
Types
Floppy Disk
1.44 MB
Non-volatile
Magnetic

Hard Disk
Upto several TBs
Non-volatile
Magnetic

Compact Disk (CD)
Upto 700 MBs
Non-volatile
Optical
CD-R, CD-RW
USB Flash Drive (Pen Drive, USB Stick)
Few TBs
Non-volatile
Flash Integrated Circuits (Flash ICs)

Digital Versatile/Video Disk (DVD)
Several GBs
Non-volatile
Optical
DVD-R, DVD-RW
Secure Digital Card (SD card)
Several GBs
Non-volatile
Flash Integrated Circuits (Flash ICs)
SD, SDHC, SDXC

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