On Thu, Mar 12, 2009 at 9:32 AM, Dan Langille <d...@langille.org> wrote: > John Drescher wrote: >> On Thu, Mar 12, 2009 at 8:38 AM, Victor Hugo dos Santos >> <listas....@gmail.com> wrote: >>> On Wed, Mar 11, 2009 at 6:37 PM, John Drescher <dresche...@gmail.com> wrote: >>>> On Wed, Mar 11, 2009 at 5:01 PM, Victor Hugo dos Santos >>>> <listas....@gmail.com> wrote: >>> [...] >>> >>>> This is expected for incremental backups because the hard drive spends >>>> most of the time thrashing finding the files to backup. However in >>>> most cases even with the low data rate this is much faster than >>>> running a full backup with a much higher backup rate. >>> the same problem in FULL backup.. look: >>> >> You are using software compression. That will drastically slow down a backup. > > What John said. Turn off software compression. >
I am not sure what the OP is trying to optimize here however I do have a few ideas if I guess the problem correctly. Assumption: Need to backup 40 desktops/servers to a disk array with reasonable performance (want all jobs to finish over night) and want to use software compression to get more space What I would do is use concurrency (5 to 10 simultaneous jobs running at the same time) and a small spool file size (2 to 5GB) and run the jobs at night. This way the individual clients may have a low backup rate because they are spending a lot of time compressing files or in the case of incremental jobs they are spending a lot of time searching for changed files. However in this case the backup server is constantly busy writing to disk and more work is being done at one time. John ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
