There's actually quite a bit:
On UNIX, there are actually three directories
with manpages under /usr/openv (/usr/openv/man, /usr/openv/netbackup/man,
/usr/openv/volmgr/man). If you set your MANPATH to include these
directories, there's quite a bit of help there.
On NT, there is the standard NT help,
of course.
On all platforms, there are PDF versions
of all the manuals available. These files are shipped with the software.
If you don't have them, you should contact your sales rep.