Questions on Data Domain DD Boost with Netbackup 7.5
I'm looking for confirmation of my understanding of how DD Boost works with Netbackup 7.5. We are planning to make all large servers media servers with DD boost installed to enable de-dupe at source.
Is it true that for DD Boost de-dupe at source to work....
a) Netbackup media server to be installed (not just the ordinary Netbackup client) along with the dd boost plugin,
b) each media server must have a dedicated storage unit for which it is the only media server enabled/assigned?
As I understand it, without a storage unit dedicated to the target media server, another media server also assigned to the storage unit could step in to backup the first (I have seen this happen - Netbackup DOES NOT favour the 'local' media server). If that happens then the initial transfer of data across the network from the original source media server to the secondary media server will NOT be de-duped but will be a far-from-ideal full transfer of every single last scrap of data. The secondary media server will then de-dupe the transfer between itself and the Data Domain storage box.
Is this the truth of the matter?
Thanks for any input!