Backup Script

[Lyttek]

You just saved me a bunch of money on bandwidth. Actually, not, but it is much better on the DC's bandwidth. ;-)

Now, if I can just figure out how to save a bunch of money on my car insurance...

[vishwas]

Hello,

Can we change the ratio for cpmression of tar, like say if am taking backup of 1Gb data its compress the file and makes 600 mb tar file can i reduce it to 100 mb or 200 mb ??

Or do we have any other compression option which compress tar file in ratio of 1:8 ??

-Thanks in Advance.

[Lyttek]

By default, and someone may correct me as this is an "educated guess", that tar compression is at it's best by default.

Using the --rsyncable switch will reduce the efficiency of the compression algorithm slightly. The compression ratio isn't something you can force; it's a function of the type of data being compressed.

For instance, if you have a 2gb text document composed of nothing but the letter "A", that will compress down to next to nothing. A 2gb document that is a complex graphic won't compress nearly as much, because the data is too non-repetitive.

In fact, a file in which there are no repeating patterns whatsoever will not compress at all. (this is essentially what you have at the start if you try to compress a compressed file.)

[vishwas]

By default, and someone may correct me as this is an "educated guess", that tar compression is at it's best by default.

Using the --rsyncable switch will reduce the efficiency of the compression algorithm slightly. The compression ratio isn't something you can force; it's a function of the type of data being compressed.

In fact, a file in which there are no repeating patterns whatsoever will not compress at all. (this is essentially what you have at the start if you try to compress a compressed file.)

Apprieciate your reply,

And first thing, am just compressing a normal data via /script/cpbackup , but thing is that i have many server and each server carry about 600 to 700 account on each server. And I want to take daily backup on remote server so its not easy to take all account everyday ( it will take long time) so am searching such script which is compress more the data and take very less time to trasfer my backup to remote server.

Any suggestion.........!!!

Thank you ,

[lloyd_tennison]

Try this thread

http://forums.cpanel.net/showthread....7076&highlight

or this one

http://forums.cpanel.net/showthread....9457&highlight