I have the following scenario:

EMC Networker: 7.6.2.1 on windows Server 2008 R2

NMM 2.3 Build 87

Exchange 2010 SP1 EE with 4 nodes of Mailbox (DAG) . Version 14.1.218.15

When I try to run a backup I get different errors:

Writer %s comp %s was not explicitly added to backup\n. 2 0 33 Microsoft Exchange Replica Writer 0 4 Logs

Exchange 2010 saveset %s -- backup type %s added to the backup. 2 0 23 Microsoft Exchange 2010 0 7 PASSIVE

start the creation of a replica. Replica will be of type %s %s. 2 0 34 Default - which is VSS determined  0 17 Non Transportable

An error was detected during the replica creation.  Details in nmm.raw on %s and in the Windows Application or System Event Log. \n 1 0 14 exchangeserver01

Exception caught: %s 1 0 25 Failed to create replica.

And then I found this

ERROR:Circular logging is enabled for DB1. You must disable circular logging before creating replicas otherwise your replicas will fail.

INFO:The Exchange Database "DB1" and Logs reside on the same volume "(E:\)".

And so on for every DB in my DAG.

Let me know if something is missing.