Changing the compression setting for an existing job

# Sample script to change the compression settings for an existing Double-Take job

# Specify the variables to be used in the script

     # Source server and credentials

     $DtSourceName = "alpha"

     $DtSourceUserName = "domain\administrator"

     $DtSourcePassword = "password"

     # Target server and credentials

     $DtTargetName = "beta"

     $DtTargetUserName = "domain\administrator"

     $DtTargetPassword = "password"

# Import the Double-Take PowerShell module

# This may be \Service\ or \Console\ depending on your installation

Import-Module "C:\Program Files\Vision Solutions\Double-Take\Console\DoubleTake.PowerShell.dll"

# Create source and target objects

$DtSource = New-DtServer -Name $DtSourceName -UserName $DtSourceUserName -Password $DtSourcePassword

$DtTarget = New-DtServer -Name $DtTargetName -UserName $DtTargetUserName -Password $DtTargetPassword

# Identify the job, based on the source server name

$DtJob = Get-DtJob -ServiceHost $DtTarget | Where-Object { $_.Statistics.CoreConnectionDetails.SourceMachineName -eq $DtSourceName}

# Create a workload object on the source to edit the current workload rules

$DtWorkloadGUID = New-DtWorkload -ServiceHost $DtSource -Workload $DtJob.Options.Workload

# Enable compression using one of the following combinations

# level = -1 Compression is disabled

# level = 0 and algorithm = 10 Compression is enabled at low level

# level = 1 and algorithm = 21 Compression is enabled at medium level

# level = 2 and algorithm = 31 Compression is enabled at high level

$DtJob.Options.CoreConnectionOptions.ConnectionStartParameters.CompressionLevel.Level=1

$DtJob.Options.CoreConnectionOptions.ConnectionStartParameters.CompressionLevel.Algorithm=21

# Update the workload rules in the job options with the new modifications

$DtWorkload = Get-DtWorkload -ServiceHost $DtSource -WorkloadId $DtWorkloadGuid

$DtJob.Options.Workload=$DtWorkload

# Verify the new job options on the existing job.

$DtConfirmation = Confirm-DtJobOptions -ServiceHost $DtTarget -JobId $DtJob.Id -JobOptions $DtJob.Options

do

{

          # Poll every second for the confirmation status

          Start-Sleep -Seconds 1

          $DtConfirmStatus = Get-DtVerificationStatus -ServiceHost $DtTarget -Token $DtConfirmation

          # When the activity completion status is not InProgress, the confirmation is complete.

} while ($DtConfirmStatus.Steps.Status -eq 0)

# If the completion status is Error, print out the steps reporting an Error

if ($DtConfirmStatus.Steps.Status -eq 3)

{

          Write-Error "The following job validation errors were detected:"

          $DtConfirmStatus.Steps | ForEach-Object

          {

                    if ($_.Status -eq 3)

                    {

                              Write-Error "$($_.Id) : $($_.TitleKey) : $($_.MessageKey)"

                    }

           }

          # Terminate so the job is not edited with invalid options

          throw "Job validation failure."

}

# Apply new job options with the updated workload rules, forcing a remirror.

Edit-DtJob -ServiceHost $DtTarget -JobId $DtJob.Id -JobOptions $DtJob.Options

# Close the connections for the server objects

Disconnect-DtServer -ServiceHost $DtSource

Disconnect-DtServer -ServiceHost $DtTarget