On 2007.10.30. 13:21, Eric Böse-Wolf wrote: > I did a few test and maybe someone is interested in the results. > > I did a backup of the linux kernel documentation, quite a lot of > text ("du -sh ." gives 22M in the directory), under different > conditions, each of those backups I wrote to a new file volume and > here are the sizes of the file volumes: > > Keylength Compression(GZIP) Resulting Mediasize (Bytes) > none no 17299177 > none yes 6638157 > 1024 no 18840845 > 2048 no 19751779 > 4096 no 21519151 > 1024 yes 8179802 > 2048 yes 9091106 > 4096 yes 10858478 > > If you compress and you have a damaged tape, you will lose more date as > if you did not use compression, but for encryption the tape is wothless > with only a single failure to, so I think if you use encryption you can > also use compression, if you have the CPU power for it. (The time a > backup needed increased significantly with the keylength, but I did not > measure exact times here.)
maybe this should be added to the wiki ? > Yours sincerely, > > Eric Böse-Wolf -- Rich ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users