HP Serveur lame HP ProLiant BL465c Gen8 - Manual (Page 67)

Backing up and restoring the active mailbox database copy and the passive mailbox database
copy by using the same backup server
The following figure shows an example of a DAG configuration in which an active mailbox database
copy and a passive mailbox database copy are backed up and restored by the same backup server.
Figure 34 Configuration in which an active mailbox database copy and a passive mailbox database
copy are backed up and restored by the same backup server
Primary volume 1 is the active mailbox database copy, and primary volume 2 is the passive mailbox
database copy. Secondary volume 1 and secondary volume 2 are managed by the backup server.
The data synchronization between the active side and the passive side is accomplished via log
shipping. Data is backed up on both the active side and the passive side, and the data on each
secondary volume is stored on a tape device.
If an error occurs on the active side, the passive side takes over the execution of services. After the
active side recovers from the error, seed processing is performed from the passive side, so that the
data that was updated while the passive side was executing the services is applied to the active side.
If an error occurs on the passive side, seed processing is performed from the active side, so that the
data on the passive side is restored.
Application Agent CLI User Guide 67