We have Netbackup 7.6 and Datadomain as target
EMC-VNX is a NAS device.
Can i configure NDMP backup to DataDomain without VTL.
What will be best configuration method to backup VNX NAS to DataDomain
You would be doing Remote NDMP where the data streams to the media server and the media server does all the writing via the plugin to the datadomain.
Looks like you are on Solaris - so am I, and I connect to the data domains via Fiber Channel. BOOST does NOT work over Fiber Channel (yet) for all Solaris servers.
I believe if you are using IP, you should be able to set up the DD as a disk target over IP, and use BOOST that way.
However, that is more of a Data Domain discussion, you should definitely speak with EMC...