THE WHATIS.COM WORD-OF-THE-DAY   
December 3, 2001

defragmentation
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TODAY'S WORD: defragmentation

See our definition with hyperlinks at
http://searchwindowsmanageability.techtarget.com/sDefinition/0,,sid33_gci784231,00.html

Defragmentation is the process of locating the noncontiguous
fragments of data that a computer file is sometimes divided into when
it is stored on a hard disk or other storage device, and rearranging
the fragments into a single section of data (or as few as possible),
thus using storage more efficiently and reducing access time. Some
operating systems automatically defragment storage periodically;
others require that the user occasionally use a special utility for
this purpose. 

Windows 98 comes with a built-in defragmenter as a "system tool" that
the user can run. Windows NT did not come with a defragmenter because
its file system was designed to minimize fragmentation; however, NT
users often find one necessary and several vendors provide
defragmenters. Windows 2000 comes with a "light" version of the
Diskeeper defragmenter; some users (especially corporate users) use
Diskeeper or other fully-capable defragmentation program to manage
storage efficiency and performance. 

An operating system (or file system) that fragments files when it
stores them uses some mechanism like the file allocation table (FAT)
in early Windows systems to keep track of where all the fragments are
and then updates the table whenever the defragmentation process is
run. 

RELATED TERMS:
file system
http://whatis.techtarget.com/definition/0,289893,sid9_gci212120,00.html

file allocation table
http://whatis.techtarget.com/definition/0,289893,sid9_gci213956,00.html
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SELECTED LINKS

SearchWindowsManageability.com provides a case study, "Defrag for
less hang time."
http://searchwindowsmanageability.techtarget.com/originalContent/0,289142,sid33_gci783387,00.html

SearchWindowsManageability.com also provides a collection of links to
more information about defragmentation. 
http://searchwindowsmanageability.techtarget.com/bestWebLinks/0,289521,sid33_tax287670,00.html

Labmice.net also provides links to stories about defragmentation.
http://www.labmice.net/diskmgmt/defragment.htm
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KNOW IT ALL QUESTION | #74

This is the coordinated processing of a program by multiple
processors that work on different parts of the program, using their
own operating systems and memory.

a. massively parallel processing  
b. dual in-line memory module 
c. hybrid online analytical processing 
d. signal processing 

>>See correct answer:
http://www.searchwindowsmanageability.com/originalContent/0,289142,sid33_gci784139,00.html
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RECENT ADDITIONS  

[1] fragmentation 
http://searchwindowsmanageability.techtarget.com/sDefinition/0,,sid33_gci784241,00.html

[2] Compact HTML 
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci784210,00.html

[3] certification 
http://searchwin2000.techtarget.com/sDefinition/0,,sid1_gci784214,00.html

[4] virtual ISP 
http://searchwebmanagement.techtarget.com/sDefinition/0,,sid27_gci784100,00.html

[5] NTFS
http://searchwin2000.techtarget.com/sDefinition/0,,sid1_gci212675,00.html

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