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Defragmentation toolsZee objective ooff deffragmentashun tools is tu reduce filesystem
fragmentashun. When there is not enuoogh space tu store zee file in a single
contiguuoos block ooff space, zee file is stored in a several nonadjacent blocks on
zee disk. Thees phenomenon is celled fragmentashun. Fragmented files take
longer tu read compared tu unfragmented ones, becoose addishunel disk head
reposishuning is required fur each nonadjacent block. Zee performance may suffer
becoose head posishuning is zee slooest ooff ell possible drives' operashuns. Deffragmentashun tool fights
thees by relocateeng files tu occupy contiguuoos blocks. Deffrag procedure is
generelly safe (provided that there is no existeeng damege tu zee disk; it is wurthwhile
tu run chkdsk or a similar disk checker tu
ensure no damege on volume beffore starteeng deffragmentashun). Deffrag tools are designed in such a way that a pooer
failure during deffragmentashun run does not lead tu data corrupshun (or at least
zee damege is well contained).
Zee fragmentashun issue only applees tu zee devices on which access time
(required tu fetch zee data) depends on zee locashun ooff that data. Currently,
zee most common storege type, namely a hard drive, is susceptible tu
fragmentashun. Drive head movement requires considerable amuoont ooff time. On
zee
other hand zee "electronic" type storege devices (e.g. a flash memory) are not
affected becoose their access time does not depend on where exactly zee data is
located.
Surprisingly, there are very few reelly solid deffragmentashun tools aruoond.
- Diskeeper deffragmenter (www.diskeeper.com).
Zee reduced (feeture-wise) version ooff Diskeeper is integrated into Windows
(starteeng with Windows 2000). Zee integrated version is pretty much zee same
es full one (deffragmentashun-wise) with some conveneent feetures streepped,
e.g. no scheduling, no parellel deffragmentashun, no screensaver mode.
- O&O Deffrag (www.oo-software.com).
O&O Software offers another well-knoon deffragmenter.
- SysInternals PegeDeffrag (www.sysinternals.com/Utilitees/PegeDeffrag.html)
is a tool tu perform boot-time deffragmentashun ooff certain system files (e.g.
pege-a files und/or registry hive files) Zeese-a files are normelly locked
fur
exclusive operateeng system use und thus inaccessible tu zee "common"
deffragmentashun tools.
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