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
