7zip zip file size growth
Posted on 2011-03-10
Ok i have 140,000+ exchange log files that i need to get rid of, but they are not to be deleted. so instead of keeping 140GB on my server, i thought i would zip them. since it is all text and should zip quite nicely. so i wrote a script to seperate all 140,000+ logs into groups of 500 to be zipped. This is my result of the first 7 groups.
1) 1.754MB <----What i expected
2) 129.455MB <----A little large, and as you can see it gets bigger
6) 73.349MB <----Now small again?...
So my question to you all is, am i doing something wrong? nothing should be running on the pc in the background but i thought that it would just take longer to zip the files, not lower the quality.
This is what i am zipping with and the file specs
7za.exe <----7zip command line exe
Ultra <----7zip highest compression
EachFile is 1024KB <----All are the same size.
Any Ideas? i would like them to be 1MB if possible like the 1st group. :)