Ondrej Žilinec – IT Blog

When I migrate mailboxes between Exchange servers I increase numbers of move requests because two is really limiting in nowadays network and servers speeds.

All Exchange processes have their configuration files stored in directory C:Program FilesMicrosoftExchange ServerV14Bin and *.config files. Process which is responsible for migrating is called MSExchangeMailboxReplication.exe and it’s configuration file is called MSExchangeMailboxReplication.config.

At the end of this file are some settings:

  <MRSConfiguration
    MaxRetries = “60″
    MaxCleanupRetries = “5″
    MaxStallRetryPeriod = “00:15:00″
    RetryDelay = “00:00:30″
    MaxMoveHistoryLength = “2″
    MaxActiveMovesPerSourceMDB = “5″
    MaxActiveMovesPerTargetMDB = “2″
    MaxActiveMovesPerSourceServer = “50″
    MaxActiveMovesPerTargetServer = “5″
    MaxTotalMovesPerMRS = “100″
    FullScanMoveJobsPollingPeriod = “00:10:00″
    MinimumTimeBeforePickingJobsFromSameDatabase = “00:00:04″
    ServerCountsNotOlderThan = “00:10:00″
    MRSAbandonedMoveJobDetectionTime = “01:00:00″
    BackoffIntervalForProxyConnectionLimitReached = “00:30:00″
    DataGuaranteeCheckPeriod = “00:00:10″
    DataGuaranteeTimeout = “00:30:00″
    DataGuaranteeLogRollDelay = “00:01:00″
    EnableDataGuaranteeCheck = “true”
    DisableMrsProxyCompression = “false”
    DisableMrsProxyBuffering = “false”
    MinBatchSize = “100″
    MinBatchSizeKB = “256″ />
</configuration>

I think lines are explained by them selves. I usually increase two line to follwing values:

MaxActiveMovesPerSourceMDB = “10″
MaxActiveMovesPerTargetMDB = “10″
MaxActiveMovesPerSourceServer = “50″
MaxActiveMovesPerTargetServer = “50″

Now I spend about 5 times less time migrating mailboxes and servers are fine with this load.

Happy migration times