Recovering a NBU 5 catalog into an NBU 6 server catalog.

Do you already have data in your nbu6 catalog? If so, what it sounds like you want is to merge your two catalogs... There is no 'utility' for that and generally Symantec Consulting services would be needed.

Here's a somewhat related discussion:
http://forums.symantec.com/discussions/thread.jspa?messageID=41349ꆅ
and
http://forums.symantec.com/discussions/thread.jspa?messageID=4332676&#4332676Message was edited by:
Alex Vasquez

I do not think that can be done. I think what needs to be done is upgrading the 5.1 machine to the same level as the 6.0 server then decomissioning the old server.

decommission media server
http://seer.support.veritas.com/docs/266720.htm
http://seer.support.veritas.com/docs/230047.htm
bpmedia -movedb

http://support.veritas.com/docs/285223
Welcome to the Veritas NetBackup (tm) 6.0 Upgrade Portal!

I believe Dennis is correct in upgrading your 5.1 server first, before atempting a merge... Again, though, given the sticky nature of the process; contacting consulting services to see if it's possible would be advised.

I've asked the question and tried to do it. Because the catalog and image DB are completely different you can not restore a 5 catalog to a 6 catalog and vise versa