HP Serveur lame HP ProLiant BL465c Gen8 - Manual (Page 79)

• For Information Stores for which DAGs are enabled, the replication status of each passive
mailbox database copy to be backed up must be Healthy .
• For a mailbox database copy, you cannot back up both the active mailbox database copy and
the passive mailbox database copy at the same time. Wait until the backup command executed
for one mailbox database copy is finished before executing the backup command for the other
mailbox database copy.
• To restore the backup data, the mailbox database copy to be restored must be in the active status.
If it is not in the active status, a message indicating an error is displayed.
• Backup data can be restored only by the Exchange Server that backed up the data. An Exchange
Server cannot restore backup data that was obtained by a different Exchange Server.
• Correct execution of the replication function after restoration requires seed processing. If you do
not perform seed processing, the replication function will not return to normal.
• If you use the seed function in a DAG configuration, for the -ef option, you need to specify an
Exchange environment configuration file in which the EXG_DAG_SEED parameter value is set to
ON . If the Exchange environment configuration file does not have this setting (for example, the first
priority is finishing a restoration or deferring seed processing), seed processing will not be executed.
• If you perform a restore operation without using the seed function in a DAG configuration, the
replication function for the object to be restored stops, and seed processing is not executed. After
the restore operation finishes, you will need to manually start seed processing and the replication
function.
• If you want to perform a roll-forward restore operation in a configuration in which mailbox database
copies on both the active side and the passive side are backed up, specify the option for deleting
transaction logs only for the active side or only for the passive side. This is because if an option
for deleting transaction logs is executed, the transaction log information for other mailbox database
copies will be also deleted. HP recommends that you specify the option for deleting transaction
logs only for the active side or only for the passive side to prevent all of the transaction logs from
being deleted and to improve redundancy.
• When you perform a restore operation, the Microsoft Exchange Replication Service must be running
on an Exchange Server that is operating as the primary active manager.
• Even when you execute seed processing after performing a point-in-time restore operation, the
copy queue length might not be 0. To switch over mailbox database copies in this state, use Ex-
change Management Shell.
• Example command:
Move-ActiveMailboxDatabase database-name -ActivateOn-
Server switchover-target-server-name -SkipLagChecks:$True -MountDia-
lOverride:Besteffort
• You cannot perform a backup operation in an environment in which both an active mailbox
database copy and a passive mailbox database copy exist.
• When you perform a point-in-time restore of the passive mailbox database copy backup, the active
mailbox database copy might be restored to a status it was in before the execution of the backup
command. To avoid this problem, perform the following procedure:
1. Stop the database copy.
2. Reseed the database.
3. Back up the passive mailbox database copy.
• Automatic reseed cannot be used with Exchange Server 2013.
• For Exchange Server 2013, before performing the restore, you must stop the Microsoft Exchange
Search Host Controller Service on the database server.
The following problems might occur when you stop the Microsoft Exchange Search Host Controller
Service:
Application Agent CLI User Guide 79