Invoke-ADReplication.ps1

[CmdletBinding()]
param(

    [Parameter( Mandatory, Position = 1, ValueFromPipelineByPropertyName, ValueFromPipeline )]
    [Alias( 'HostName', 'Server' )]
    [string[]]
    $ComputerName,

    [System.DirectoryServices.ActiveDirectory.SyncFromAllServersOptions]
    $SyncOptions = @( 'CrossSite', 'PushChangeOutward', 'SkipInitialCheck' ),

    [ArgumentCompleter({
        param( $CommandName, $ParameterName, $WordToComplete, $CommandAst, $FakeBoundParameters)

        if ( -not $FakeBoundParameters.ComputerName ) { return '' }

        $DirectoryContext = [System.DirectoryServices.ActiveDirectory.DirectoryContext]::new( 'DirectoryServer', $FakeBoundParameters.ComputerName )

        [System.DirectoryServices.ActiveDirectory.DomainController]::GetDomainController( $DirectoryContext ).Partitions.ForEach({ "'$_'" }).Where({ $_ -like "$WordToComplete*" -or $_ -like "'$WordToComplete*" })

    })]
    [SupportsWildcards()]
    [string[]]
    $Partitions = '*',

    [pscredential]
    $Credential

)

process {

    if ( -not $PSBoundParameters.ContainsKey( 'InformationAction' ) ) { $InformationPreference = 'Continue' }

    $ComputerName.ForEach({

        if ( $SyncOptions -band [System.DirectoryServices.ActiveDirectory.SyncFromAllServersOptions]::PushChangeOutward ) {

            Write-Information "Beginning outbound replication from server $_"

        } else {

            Write-Information "Beginning inbound replication to server $_"

        }

        if ( $Credential ) {

            $DirectoryContext = [System.DirectoryServices.ActiveDirectory.DirectoryContext]::new( 'DirectoryServer', $_, $Credential.UserName, $Credential.GetNetworkCredential().Password )

        } else {

            $DirectoryContext = [System.DirectoryServices.ActiveDirectory.DirectoryContext]::new( 'DirectoryServer', $_ )

        }

        $DomainController = [System.DirectoryServices.ActiveDirectory.DomainController]::GetDomainController( $DirectoryContext )



        $Partitions |
            ForEach-Object { $DomainController.Partitions -like $_ } |
            Select-Object -Unique |
            ForEach-Object {

                Write-Information "Syncing partition $_"

                $DomainController.SyncReplicaFromAllServers( $_, $SyncOptions )

            }

    })

}