Thanks for the information.
we are using Exchange 2007 SP3.
We are using Simpana version 9.0 R2.
Dedup is "on client".
On the Exchange mailbox server, in the Windows event logs, we see one database at a time.
When SG1 gets done, SG2 starts, etc.
Is this (single-threaded / one database at a time) still true for that environment ?