HP Serveur lame HP ProLiant BL465c Gen8 - Manual (Page 62)

Figure 30 Example of an SCR configuration
Application Agent's restore processing provides the SCR seed function that executes seed processing
(data resync) in an SCR configuration. The user can set whether the SCR seed function is to be used.
The SCR seed function is used in the following cases:
• When a point-in-time restore operation is performed.
• When data integrity between the source and target is known to have been lost when a roll-forward
restore operation was performed.
If at least one of the targets set for each storage group is running, you can perform the restore operation
using the seed function.
When the SCR seed function is not used in an SCR configuration, the user must perform seed processing
manually after restoration. The following describes seed processing in an SCR configuration:
1. Cancel replication.
2. Delete the Exchange database file, the transaction log file, and the checkpoint file from the target.
3. Resync data from the source to the target.
4. Restart replication.
DAG configurations
A DAG configuration is one type of high-availability functionality in Exchange Server 2010 or Exchange
Server 2013. A mailbox database used in a DAG configuration is called a mailbox database copy.
A replication-source mailbox database copy is called an active mailbox database copy, and a
replication-target mailbox database copy is called a passive mailbox database copy. In a DAG
configuration, you can group multiple Exchange databases, and back up mailbox databases within
Application Agent system configurations 62