https://community.hpe.com/t5/automated-backup/autoloader/m-p/97770#M169 I would use /dev/rmt/cxtxd0BEST<BR /> <BR /> This will always try for the best compression etc available. You will be able to see which driver it is by <BR /> "ioscan -kfnC tape"<BR /> the hardware path that represents your current device file should have a file including BEST. Fri, 07 Jun 2002 06:29:11 GMT Trevor Roddam 2002-06-07T06:29:11Z https://community.hpe.com/t5/automated-backup/autoloader/m-p/97769#M168 Hi,<BR /> I have a autoloader 1/9 with OmniBack II, and it is configured as /dev/rmt/0mb, may I use another device? For example, /dev/rmt/0cb, /dev/rmt/0ub, etc. Will I get more space?<BR /> Thanks. Thu, 06 Jun 2002 09:52:20 GMT https://community.hpe.com/t5/automated-backup/autoloader/m-p/97769#M168 Ruben Nogueras 2002-06-06T09:52:20Z https://community.hpe.com/t5/automated-backup/autoloader/m-p/97770#M169 I would use /dev/rmt/cxtxd0BEST<BR /> <BR /> This will always try for the best compression etc available. You will be able to see which driver it is by <BR /> "ioscan -kfnC tape"<BR /> the hardware path that represents your current device file should have a file including BEST. Fri, 07 Jun 2002 06:29:11 GMT https://community.hpe.com/t5/automated-backup/autoloader/m-p/97770#M169 Trevor Roddam 2002-06-07T06:29:11Z https://community.hpe.com/t5/automated-backup/autoloader/m-p/97771#M170 The device files which are built by the system as default are fine. You normally have device files with berkeley headers or AT&amp;T. Unless you have created a specific device file which turns off data compression then the stnadard device file is fine. Let Omniback do the work.<BR /> <BR /> Rothery Fri, 07 Jun 2002 06:49:12 GMT https://community.hpe.com/t5/automated-backup/autoloader/m-p/97771#M170 Rothery Harris 2002-06-07T06:49:12Z