Frederic, What are the tuning parameters ?
Are you bumping into an amanda imposed bandwidth limit ? What are the settings for max dumpers and number of jobs you can run at one time for each client ? What level of SW compression are you using ? On Fri, Jul 09, 2004 at 10:22:46AM -0400, Joshua Baker-LePain wrote: > On Fri, 9 Jul 2004 at 9:27am, Frederic Medery wrote > > > We have more and more prob with the backup : it takes more then 14 h. > > > > It's not amanda fault just the amount of data. :-) > > How much per night? > > > For now we have a backup server with a amanda partition with 18 GB > > connected to a IBM LTO Ultrium 3581 tape Charger (7 tapes). The Hardware > > compression is off (sofware compression is used). > > > > Now we have GB network and faster server with losts of RAM and HD spaces > > and I want to install Amanda on our prod server which have the largest > > amount of data. > > > > so is-ti better (faster backup) to have : > > hardware or software compression ? > > A larger amanda partition ? > > > More holding space is going to give you the biggest boost. Software vs. > hardware compression with regards to speed depends on your hardware -- if > the CPUs can compress the data as fast as the disk/network can take it, > then it isn't going to slow you down. > > Also note that, with your LTO drive, you can turn on hardware compression > *and* use software compression on selected DLEs if you so choose. > > -- > Joshua Baker-LePain > Department of Biomedical Engineering > Duke University --- Brian R Cuttler [EMAIL PROTECTED] Computer Systems Support (v) 518 486-1697 Wadsworth Center (f) 518 473-6384 NYS Department of Health Help Desk 518 473-0773