Both LCR and
SCR use the Enable-StorageGroupCopy cmdlet. The Service Pack 1 versions for these cmdlets contain
three new parameters for SCR:
??‘ StandbyMachine
??‘ ReplayLagTime
??‘ TruncationLagTime
The StandbyMachine string parameter specifies the name of the mailbox server that will be the SCR
target.
The ReplayLagTime parameter sets the amount of time the SCR target will wait before replaying log
files from the source. The syntax is Days.Hours:Minutes.Seconds , and has a default setting of 24
hours. The minimum value is 0, however there is an overall minimum of 50 log files that cannot be
changed. Having a lag of 50 log files reduces the chance for the need to reseed the SCR target if the SCR
source experiences a lossy failover.
The SCR target does not create its database until it receives the first 50 logs.
The TruncationLagTime parameter sets the amount of time the SCR target waits before truncating log
files that have been replayed into the SCR target ??™ s database copy. The syntax is Days.Hours:Minutes
.Seconds and can be set from 0 to 7 days.
To change ReplayLagTime or TruncationLagTime , SCR must be disabled and re - enabled with the
new values.
For this example, the Mailbox server role was added to the CA100, the test Client Access Server. Next,
SCR was enabled for the ??? First Storage Group ??? storage group on the CCR cluster MB100CCR:
Enable-StorageGroupCopy -Identity ???MB100CCR\First Storage Group???
-StandbyServer CA100
Seeding
After continuous replication has been enabled, the next step is to seed the passive node.
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