Edit Devices, Continued
Hard disk drives are generally part of the system unit. These sealed units are
inside the unit as stacks or tiers of rigid metal platters that are not removable.
Some of the advantages of hard disk drives are their increased speed of
execution and memory capacity. Hard disk storage capacities range from 50
MB to 2 GB. Also, there is no need for you to open, close, file, or find a
diskette manually and no initialization or rebooting, as there is with a floppy
Data that is sensitive information and requires protection, such as classified
material or advancement examinations and results, belongs on a removable
disk drive. Programs which are large and memory intensive also belong on a
removable hard drive. Removable hard disk drives are just like built-in hard
disk drives except for their portability. You can physically remove a
removable hard disk drive from the system unit for safekeeping in a secure
area, such as a safe.
Figure 3-8 shows a removable hard disk drive.
Figure 3-8. A removable hard drive.
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