I'm trying to find out some details on what bpverify is testing when it
reads images on media. My intent is to make sure that the media hasn't
suffered some type of corruption and the stuff on the tape matches what's
in the catalog.

Specifically, I need to understand exactly what a successful bpverify
means and how bpverify compares to bpduplicate. In short, is bpduplicate a
significantly better test of an image written to a piece of media, or is
bpverify "good enough"?

The confusion is the result of a comment by a Veritas NBU support
engineer that indicated that bpverify doesn't do as rigorous a job as a
bpduplicate.

This verification step is intending to be a quick spot check in addition
to more intensive restore testing.

Any thoughts or pointers on this would be appreciated.

-- 
Michael Barrow
michael AT mlbarrow DOT com