Dell DR4000 - Manual (Page 20)

20 Setting Up the Dell™ DR Series System as a CIFS Backup Target on EMC Networker | February 2014
15. Go through the procedure of creating a new backup group.
16. In Specify the Client Backup Options, pay special attention to the following settings:
a. Deduplication should be set as None;
b. Target Pool should be set as the pool that has DR Series Deduplication Appliance device
included;
c. Client Direct can be enabled if client directly backing up data to DR is preferred, thus
bypassing the storage node managing the DR share. For Client Direct to work, the DR device
must have at least one device path that the client can use to directly access the DR container