Data Storage and Retrieval
Chapter Four - Data Storage
55
4. Pull on the FDD finger grip to slide the FDD module out of the bay.
5. To insert the FDD module, slide the module into the drive bay so that it mates
with its connector. You will hear the release latch click shut.
W
ARNING
:
Never turn off or reset the TransPort NX while the FDD LED is on. Always
store your diskettes in a dry, clean container, to protect them from the
environment and magnetic fields.
Removable Hard Disk Drive Module
A hard disk, like a floppy diskette, magnetically stores data and retains that data
when the computer is turned off. Hard disk drives have higher capacities and
operate at much faster speeds than floppy disk drives.
Your TransPort NX comes equipped with a hard disk drive already installed and
prepared for operation. Your computer’s hard disk drive is an integrated drive
electronics drive, commonly referred to as an IDE drive, with a form factor of 2.5
inches. IDE drives have become an industry standard for PC hard drives because
they provide a reliable, fast, and cost-effective mass storage solution. The
formatted capacity of the TransPort NX’s HDD is 1.44GB or above.
Disk Caching
A disk cache is used to increase hard disk performance. It sets aside a portion of
the computer’s system memory where frequently used data from the hard disk is
temporarily stored. Because typical memory access time is several thousand
times faster than disk access time, a disk cache can yield a phenomenal increase
in your computer’s overall performance.
The SMARTDRV.EXE program included with MS-DOS is an example of a
program that can be used to implement a disk cache. This program allows you to
specify the amount of memory to be used as a disk cache. Refer to a DOS manual
for instructions on the SMARTDRV.EXE program. Windows 95, 98 and NT 4.0
have a built in cache utility.
N
OTE
:
If a program’s documentation specifies to disable a memory cache, it’s not
referring to a disk cache program like SMARTDRV.EXE. Memory cache is
different from a disk cache. A disk cache is used to speed up disk access,
whereas a memory cache is normally used to speed up access to DRAM.
Summary of Contents for TransPort NX
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