How much space does compression on a ntfs volume give?

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jVirus

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I am just wondering how much compression my ntfs hard volume will get when compression is checked. It is a drive I use for mostly storage, a 120gig volume. Not like I am needing it for performance or anything. I have it already enabled and I have some 50 gigs used. I am just wondering how much space it is saving?
 

JohnWill

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It depends on what you're storing on the drive. If you're storing already compressed stuff like ZIP and MP3 files, you'll gain nothing by attempting to compress them. If you store Excel spreadsheets, you'll pick up tons of space, they normally compress to 10-20% of their uncompressed size.
 

jVirus

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What about things such as divx files or various programs, pictures (jpg)?
 

JohnWill

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DIVX and JPG are both compressed formats, no gains will be realized by trying to compress them again.
 

jVirus

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k thanks. I do wonder though like for instance like .ace or like .zip they are both compressors, one i would suppose do a better job than the other maybe making it smaller? with the disk compression would it not be that microsoft compression maybe would be tighter than other forms?
 

JohnWill

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Well, you're free to try it, but the only effect is going to be slower disk access, and probably more space taken up by the files. :rolleyes: The idea that Microsoft's on-the-fly compression would be more efficient than ZIP, ACE, or RAR brings a smile to my face. :D
 
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ACE does a better job than ZIP usually... very nice program, best compressor utility on the market (It also compresses ZIP, LHA, TAR and other formats) - best intereface, super easy to use.

WinZIP ugh... in comparison.


In the age of cheap HDs... I don't bother with compression... as other said... Large amounts of data: Mp3s, picture files, Movies, are already compressed. And if you compress Appliactions and games - then they will run slower... your system will run slower as the CPU now has to DECOMPRESS the data as it loads it.

And if you have HD failiure... imagine the fun of dealing with that mess... UGH I remember those Windows31 days of "compressed" drives... :( nightmares... Think I'll go sulk in a corner now.
 
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