On Monday 08 August 2005 06:36, Vects wrote: >Hi there, >Is there any way to set up amanda to use bzip2 or other program for >compression on client/server? > >Thanks, Alexc.
The compression amanda normally uses is gzip, not quite as effective as bzip2, but much more efficient in terms of thruput, a large consideration when lots of data is being treated. The enabling lines in the dumptype method descriptions in amanda.conf that I'm aware of are: compress server compress server best compress server fast compress client compress client best compress client fast Best means to run gzip at maximum compression, a bit slow. No argument is a bit less efficient & somewhat faster, and fast is the quickest but doesn't compress as well. Compression at high levels of compression can and will take a considerable amount of cpu horsepower. So chose a dumptype accordingly, or edit yourself a new one to suit. The only caveat that I'm aware of is that when adding a new dumptype to your amanda.conf, and you include another by way of reference, it must have already been read. You cannot make a forward reference. Your new dumptype can reference a previously defined one, and have a line that replaces that same line in the referenced dumptype. Provided the client is not also the server, then it generally makes sense to offload the compression duties to the client since many clients can be working in parallel, and it reduces occupied network bandwidth if thats a consideration since it will then be the compressed version that hits the cat5. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) 99.35% setiathome rank, not too shabby for a WV hillbilly Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.