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05-24-2011 06:40 PM
05-24-2011 06:40 PM
compression of tar file
Dear All,
what is the compression of tar file, if I have a directory of 90GB, how much space I need to provision for this directory to be tarred?
Hope to hear from you. Many thanks
what is the compression of tar file, if I have a directory of 90GB, how much space I need to provision for this directory to be tarred?
Hope to hear from you. Many thanks
- Tags:
- compression
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05-24-2011 07:14 PM
05-24-2011 07:14 PM
Re: compression of tar file
> what is the compression of tar file, [...]
Everything depends on the data. If you can
run a test on a representative sample of the
data, then you may learn something useful.
With no knowledge of the data, only guesswork
is possible.
Here are two files:
dyi # ls -l file?.dat
-rw-r--r-- 1 root sys 4096 May 24 22:05 file1.dat
-rw-r--r-- 1 root sys 4096 May 24 22:09 file2.dat
Here are the same files after gzip compression:
dyi # ls -l file?.dat.gz
-rw-r--r-- 1 root sys 4129 May 24 22:09 file1.dat.gz
-rw-r--r-- 1 root sys 106 May 24 22:09 file2.dat.gz
One was reduced by about 40:1, and the other
one grew a little. My psychic powers are too
weak to tell me how well your data can be
compressed.
Everything depends on the data. If you can
run a test on a representative sample of the
data, then you may learn something useful.
With no knowledge of the data, only guesswork
is possible.
Here are two files:
dyi # ls -l file?.dat
-rw-r--r-- 1 root sys 4096 May 24 22:05 file1.dat
-rw-r--r-- 1 root sys 4096 May 24 22:09 file2.dat
Here are the same files after gzip compression:
dyi # ls -l file?.dat.gz
-rw-r--r-- 1 root sys 4129 May 24 22:09 file1.dat.gz
-rw-r--r-- 1 root sys 106 May 24 22:09 file2.dat.gz
One was reduced by about 40:1, and the other
one grew a little. My psychic powers are too
weak to tell me how well your data can be
compressed.
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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