fbackup compression?

[Sanjay Tailor]

Hello,
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 ...??
What are the pros and cons of using compression if it can be done?

Thank you,
Sanjay.

[Brian M. Fisher · Accepted solution]

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.

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.

Brian
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