Wednesday, January 22, 2014

New High Availability Features in Exchange 2010 SP1

New High Availability Features in Exchange 2010 SP1

* Continuous replication - block mode
In the RTM version of Exchange 2010 and in all versions of Exchange 2007, continuous replication operates by shipping copies of the log files generated by the active database copy to the passive database copies. Beginning with SP1, this form of continuous replication is known as continuous replication - file mode. SP1 also introduces a new form of continuous replication known as continuous replication - block mode

* Active mailbox database redistribution
This feature is present in two forms. The first form is a script that can be periodically run by administrators to balance the distribution of active database copies across a database availability group (DAG). The second form we hope to implement is the addition of copy distribution awareness to Active Manager's best copy selection (BCS) process.

* Improved Outlook cross-site connection behavior and experience

* Enhanced datacenter activation coordination support  :  In the RTM version, DAC mode is limited to DAGs with at least three members that have at least 

two or more members in the primary datacenter.

In SP1, DAC mode has been extended to support two-member DAGs that have each member in a separate datacenter. 

* New and enhanced management and monitoring scripts
CheckDatabaseRedundancy.ps1 (new) 
StartDagServerMaintenance.ps1 and StopDagServerMaintenance.ps1 (new)
CollectOverMetrics.ps1 (enhanced)
CollectReplicationMetrics.ps1 (enhanced)

* Improvements in failover performance

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