Change SDRS – VM affinity – I/O metric – Space threshold by Cluster Script

06/19/2016

Goal – For a set of Storage Clusters (you provide via a text file); you want to these three settings changed.

Default VM affinity = un-checked aka Do not keep VMDKs together by default
I/O metric inclusion = un-checked aka I/O metrics for Storage DRS recommendations are disabled
Space threshold = 75% aka utilized space per datastore

# Found 6/19/16  http://vmscribble.com/powercli/change-sdrs-vm-affinity-io-metric-space-threshold-by-cluster-script

# Add the PowerCLI snapin to PowerShell
Add-PSsnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue

#  thanks http://frankdenneman.nl/2012/02/21/impact-of-intra-vm-affinity-rules-on-storage-drs/

    function Set-DatastoreClusterDefaultIntraVmAffinity{
    param(
    [CmdletBinding()]
    [parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $true)]
    [PSObject]$DSC,
    [Switch]$Enabled
    )

    process{
    $SRMan = Get-View StorageResourceManager
    if($DSC.GetType().Name -eq "string"){
    $DSC = Get-DatastoreCluster -Name $DSC | Get-View
    }
    elseif($DSC.GetType().Name -eq "DatastoreClusterImpl"){
    $DSC = Get-DatastoreCluster -Name $DSC.Name | Get-View
    }
    $spec = New-Object VMware.Vim.StorageDrsConfigSpec
    $spec.podConfigSpec = New-Object VMware.Vim.StorageDrsPodConfigSpec
    $spec.podConfigSpec.DefaultIntraVmAffinity = $Enabled
    $SRMan.ConfigureStorageDrsForPod($DSC.MoRef, $spec, $true)
    }
    }

# Set Variables
$vCenter = Read-Host "Enter the FQDN of the vCenter"
$listofclusters = Read-Host "Enter the path to the list of storage clusters  ex. c:scriptsclusters.txt"
$clusName = Get-Content -path $listofclusters

# Connect to your vCenter
Connect-VIServer $vCenter

# Default VM affinity = un-checked
Get-DatastoreCluster $clusName | Set-DatastoreClusterDefaultIntraVmAffinity

# I/O metric inclusion = un-checked  / Space threshold = 75%
Get-DatastoreCluster $clusName| Set-DatastoreCluster -IOLoadBalanceEnabled $false | Set-DatastoreCluster -SpaceUtilization 75 -Confirm:$false

# Disconnect from the vCenter
Disconnect-VIServer $vCenter -Confirm:$false

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

# Found 6/19/16 http://vmscribble.com/powercli/change-sdrs-vm-affinity-io-metric-space-threshold-by-cluster-script

# Add the PowerCLI snapin to PowerShell

Add-PSsnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue

# thanks http://frankdenneman.nl/2012/02/21/impact-of-intra-vm-affinity-rules-on-storage-drs/

function Set-DatastoreClusterDefaultIntraVmAffinity{

param(

[CmdletBinding()]

[parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $true)]

[PSObject]$DSC,

[Switch]$Enabled

)

process{

$SRMan = Get-View StorageResourceManager

if($DSC.GetType().Name -eq "string"){

$DSC = Get-DatastoreCluster -Name $DSC | Get-View

}

elseif($DSC.GetType().Name -eq "DatastoreClusterImpl"){

$DSC = Get-DatastoreCluster -Name $DSC.Name | Get-View

}

$spec = New-Object VMware.Vim.StorageDrsConfigSpec

$spec.podConfigSpec = New-Object VMware.Vim.StorageDrsPodConfigSpec

$spec.podConfigSpec.DefaultIntraVmAffinity = $Enabled

$SRMan.ConfigureStorageDrsForPod($DSC.MoRef, $spec, $true)

}

# Set Variables

$vCenter = Read-Host "Enter the FQDN of the vCenter"

$listofclusters = Read-Host "Enter the path to the list of storage clusters ex. c:scriptsclusters.txt"

$clusName = Get-Content -path $listofclusters

# Connect to your vCenter

Connect-VIServer $vCenter

# Default VM affinity = un-checked

Get-DatastoreCluster $clusName | Set-DatastoreClusterDefaultIntraVmAffinity

# I/O metric inclusion = un-checked / Space threshold = 75%

Get-DatastoreCluster $clusName| Set-DatastoreCluster -IOLoadBalanceEnabled $false | Set-DatastoreCluster -SpaceUtilization 75 -Confirm:$false

# Disconnect from the vCenter

Disconnect-VIServer $vCenter -Confirm:$false