Storage Devices
A storage device is ny internal (or external) device attached to the computer by a cable, online (cloud storage devises), or wirelessly which can be used to store data and retrieve data from them on some type of media which can be magnetic, optical or otherwise.
Obsolete devices no longer being manufactured but still occasionally found in older systems incude:
- Diskettes
- CD-ROM/DVD Drives
Common storage devices and systems in use today include:
- Hard Disk Drives
- Solid State Disk Drives
- USB Drives (or memory keys)
- NAS Drives
-
Cloud storage
The following table summarizes the physical and storage characteristics of several devices
Name of Device |
Speed (R.P.M.) |
Type of Storage Media |
Data Storage |
IDE or SATA Hard Drive SSDD No moving parts or media |
5400 or 7200 available for enterprise use only 15,000 High Performance |
Hard Disk – Magnetic
Solid State |
GB or TB |
SCSI Hard Drive |
10000 or 15000 Industrial Applications Only |
Hard Disk – Magnetic |
GB or TB |
diskette |
1500 obsolete |
Vinyl Disk – Magnetic |
Up to 1.44 MB |
CD – DVD ROM |
2000 – 5000 |
Hard Vinyl – Optical (laser) |
Up to 800 MB |