First published on TECHNET on Jul 10, 2007
How cool would it be, if we could schedule a nightly task that automatically grows your replica and shadow copy storage volume sizes, and in turn help the protection SLA to be good for the rest of the week!
The script below does exactly the same. Save it as a powershell script (.ps1) and add it to Windows Scheduler to achieve this magic.
--------------------------------- Start of script -------------------------------------
#This DPM powershell script helps automate the growing of replica and shadow copy volumes which need to be grown.
#You can edit the below constants which can help you configure how much you want to grow the volumes by each time
$ReplicaThreshold = 500MB
$SCThreshold = 1GB
$ReplicaGrowBy = 5GB
$SCGrowBy = 5GB
#End of Constants
$dpmservername = &"hostname"
# The cmdlet below is called Connect-Serverin the DPM v2 Beta2 build
$dpmserver=Connect-DPMServer $dpmservername
if(!$dpmserver)
{
write-error "Unable to connect to $dpmservername"
exit 1
}
$PGList = @(Get-ProtectionGroup $dpmservername)
foreach($PG in $PGList)
{
# The cmdlet below is called Modify-ProtectionGroup in the DPM v2 Beta2 build
$MPG = Get-ModifiableProtectionGroup $PG
$dslist=@(get-datasource $MPG)
foreach ($ds in $dslist)
{
if(($ds.ReplicaSize - $ds.ReplicaUsedSpace) -lt $ReplicaThreshold)
{
"Need to grow replica for $($ds.Name) on $($ds.ProductionServerName)"
$NewReplicaSize = $ds.ReplicaSize + $ReplicaGrowBy
Set-DatasourceDiskAllocation -Manual -Datasource $ds -ProtectionGroup $MPG -ReplicaArea
$NewReplicaSize
}
else
{
$ReplicaFreeSpace = $ds.ReplicaSize - $ds.ReplicaUsedSpace
$ReplicaFreeSpace /= 1MB
"Replica for $($ds.Name) on $($ds.ProductionServerName) does not need to grow and has
$ReplicaFreeSpace MB free"
}
if($ds.ShadowCopyAreaSize - $ds.ShadowCopyUsedSpace -lt $SCThreshold)
{
"Need to grow recovery point volume for $($ds.Name) on $($ds.ProductionServerName)"
$NewSCSize = $ds.ShadowCopyAreaSize + $SCGrowBy
Set-DatasourceDiskAllocation -Manual -Datasource $ds -ProtectionGroup $MPG -ShadowCopyArea
$NewSCSize
}
else
{
$SCFreeSpace = $ds.ShadowCopyAreaSize - $ds.ShadowCopyUsedSpace
$SCFreeSpace /= 1MB
"Recovery Point volume for $($ds.Name) on $($ds.ProductionServerName) does not need to grow and has
$SCFreeSpace MB free"
}
}
# The cmdlet below is called Save-ProtectionGroup in the DPM v2 Beta2 build
Set-ProtectionGroup $MPG
}
# The cmdlet below is called Disconnect-Server in the DPM v2 Beta2 build
Disconnect-DPMServer $dpmservername
"Exiting from script"
--------------------------------- End of script ---------------------------------------
-
Kapil Malhotra
