Installing Standby Continuous Replication (SCR)
There are a number of requirements to enable an SCR target. An SCR target is a mailbox server that is not
part of a cluster, and it receives a copy of a storage group from another mailbox server. This design is
described at the beginning of this chapter.
??‘ SCR targets must be in the same Active Directory domain.
??‘ SCR targets have a maximum of 50 replicated storage groups. It is a good idea to keep an SCR
source to SCR target at a 1:1 ratio, rather than configuring multiple SCR sources to the same
SCR target.
??‘ The database and transaction log paths must match on the SCR source and SCR target. This
includes the drive letters as well.
??‘ An SCR target cannot enable LCR on the replicated storage group.
??‘ An SCR target configured with CCR or SCC must not have a Clustered Mailbox Server installed.
There are a few ways to create SCR targets for storage groups. One way is with the New-StorageGroup
cmdlet. This cmdlet is covered in detail in Chapter 8 , but it has been updated to include the ability to
create a storage group enabled for SCR.
New-StorageGroup -Name < String > [-CircularLoggingEnabled < $true | $false > ]
[-Confirm [ < SwitchParameter > ]] [-CopyLogFolderPath < NonRootLocalLongFullPath > ]
[-CopySystemFolderPath < NonRootLocalLongFullPath > ] [-DomainController < Fqdn > ]
[-HasLocalCopy < $true | $false > ] [-LogFolderPath < NonRootLocalLongFullPath > ]
[-ReplayLagTime < Nullable > ] [-Server < ServerIdParameter > ] [-StandbyMachine
< String > ] [-SystemFolderPath < NonRootLocalLongFullPath > ] [-TemplateInstance
< PSObject > ] [-TruncationLagTime < Nullable > ] [-WhatIf [ < SwitchParameter > ]]
[-ZeroDatabasePages < $true | $false > ]
New-StorageGroup [-Name < String > ] -Recovery < SwitchParameter > [-Confirm
[ < SwitchParameter > ]] [-DomainController < Fqdn > ] [-LogFolderPath
< NonRootLocalLongFullPath > ] [-Server < ServerIdParameter > ] [-SystemFolderPath
< NonRootLocalLongFullPath > ] [-TemplateInstance < PSObject > ] [-WhatIf
[ < SwitchParameter > ]]
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Enabling existing storage groups is similar to the process for enabling LCR clustering.
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