https://community.hpe.com/t5/operating-system-hp-ux/fbackup-compression/m-p/2426252#M1394 Hello,<BR />I use fbackup from SAM to do my nightly backups on a DDS3 drive. I have a D-Box with 10.20. I am not sure if the data is compressed right now, can I find out if it is compressed? If not, is there a way to compress the data to hold more than the 12GB uncompressed data on a single tape? Do I need special device files etc ...??<BR />What are the pros and cons of using compression if it can be done?<BR /><BR />Thank you,<BR />Sanjay. Wed, 14 Jun 2000 12:34:25 GMT Sanjay Tailor 2000-06-14T12:34:25Z https://community.hpe.com/t5/operating-system-hp-ux/fbackup-compression/m-p/2426252#M1394 Hello,<BR />I use fbackup from SAM to do my nightly backups on a DDS3 drive. I have a D-Box with 10.20. I am not sure if the data is compressed right now, can I find out if it is compressed? If not, is there a way to compress the data to hold more than the 12GB uncompressed data on a single tape? Do I need special device files etc ...??<BR />What are the pros and cons of using compression if it can be done?<BR /><BR />Thank you,<BR />Sanjay. Wed, 14 Jun 2000 12:34:25 GMT https://community.hpe.com/t5/operating-system-hp-ux/fbackup-compression/m-p/2426252#M1394 Sanjay Tailor 2000-06-14T12:34:25Z https://community.hpe.com/t5/operating-system-hp-ux/fbackup-compression/m-p/2426253#M1395 By default the device files created by HP-UX are for best density available (i.e. hardware compression on). To verify your device files you can use SAM - Peripheral Devices - Tape Drives. Select tape drive, Actions - Show Device files.<BR /><BR />Unless you are using a software compression program for backups, you are best using the hardware compression. Keep in mind though, depending on the files being backed up you may receive greater or less than 2:1 compression.<BR /><BR />Brian<BR />&lt;*(((&gt;&lt; er Wed, 14 Jun 2000 12:47:02 GMT https://community.hpe.com/t5/operating-system-hp-ux/fbackup-compression/m-p/2426253#M1395 Brian M. Fisher 2000-06-14T12:47:02Z