> I asked a question similar to this, in regards to whether 
> NBPUSHDATA needs more disk space, but I am still not entirely sure.
>  
> The response Jim made indicated, that Netbackup leaves the 
> current DB intact and perhaps creates a new DB - but surely
> this means more disk space.

nbpushdata doesn't need more space unless you have a _lot_ of media and
devices--enough to grow the Sybase DB.  pushdata loads the 5.x flat-file
media manager information into the relational database which has been
present since NBU 6 installation time.  IIRC, the relational DB starts
out at 25MB or so.

NBU 6 installation needed more space to start with (check the
Installation Guide for specific per-platform requirements).  This part
is trivial.  Do be aware that backups of the relational DB, by default,
are staged to a staging directory within the NetBackup structure--so
either symlink that somewhere else or allow for the space at hot-backup
time.

As another poster mentioned, the new unified logging is very
space-hungry.