Command to show total remaining storage space for a host

Question

I'm looking for a way to easily view the total amount of remaining storage space for a virtual host. At present, viewing the properties for a host in SCVMM is the only way to view this in the GUI. I was looking at sourcing a Powershell command to do this, and
then feed it into a custom column, for easy viewing within the VMM main window. Has anyone desired for such a thing?
Many thanks.

Answer 1

Hi!
Since I find your question to be interesting, I decided to write two scripts that might be of use to the both of us, and the community, perhaps. The first script does what you wanted. As a bonus, I wrote a similar script that checks for free space on the
virtual machines.
IMPORTANT: I tested the scripts on SCVMM 2012 Service Pack 1. I do not recommend running the scripts without checking for possible compatibility issues.
You can use the scripts in several ways. For example, you could run the scripts every time before running SCVMM. Or you could create a Scheduled Task using a Group Managed Service Account. Or on wednesdays...
The scripts update the fields when ran.
Prerequisites for running the first script:
Execution Policy, of course
Custom Property: "Available Storage"
Here is the script you are looking for.
Import-Module virtualmachinemanager
$hostNames = (Get-SCVMHost | Select-Object Name).Name
$availableStorageProperty = Get-SCCustomProperty -Name "Available Storage"
ForEach ($hostName in $hostNames) {
$VM_Host = Get-SCVMHost -ComputerName $hostName
$availableStorage = $null
$availableStorage = $VM_Host.AvailableStorageCapacity / 1GB
If ($availableStorage) {
$availableStorage = $availableStorage.ToString("N") + " GB"
} Else {
$availableStorage = "N/A"
Set-SCCustomPropertyValue -CustomProperty $availableStorageProperty -InputObject $VM_Host -Value $availableStorage
In my organization, most of the virtual machines use only one disk, but 20% or more of all our virtual machines have two or three disks. That is why the second script checks free space on three disks per machine.
Of course, it is fairly easy to remove the lines where the script checks the state of the other two disks.
NOTE: If a Virtual Machine is in an unknown state (deleted configuration or missing in other way), the script returns several errors (six) for that machine. The script is not destructive in any way, it only updates the desired fields (Custom
Properties).
Prerequisites for running the script:
Execution Policy, of course
Custom Property: "Disk0 FreeSpace"
Custom Property: "Disk1 FreeSpace"
Custom Property: "Disk2 FreeSpace"
Here is the second script.
Import-Module virtualmachinemanager
Function Get-FreeSpace {
param ($disk)
If ($disk) {
$disk_freeSpace = $disk.MaximumSize - $disk.Size
$disk_freeSpace = $disk_freeSpace / 1GB
$disk_freeSpace = $disk_freeSpace.ToString("N") + " GB"
} Else {
$disk_freeSpace = "N/A"
Return $disk_freeSpace
$VM_Names = (Get-SCVirtualMachine | Select-Object Name).Name
$VM_disk0_freeSpaceProperty = Get-SCCustomProperty -Name "Disk0 FreeSpace"
$VM_disk1_freeSpaceProperty = Get-SCCustomProperty -Name "Disk1 FreeSpace"
$VM_disk2_freeSpaceProperty = Get-SCCustomProperty -Name "Disk2 FreeSpace"
ForEach ($VM_Name in $VM_Names) {
$VM = Get-SCVirtualMachine -Name $VM_Name
$disk0 = $disk1 = $disk2 = $null
$disk0 = Get-SCVirtualHardDisk -VM $VM | Select-Object -First 1
$disk1 = Get-SCVirtualHardDisk -VM $VM | Select-Object -Skip 1 -First 1
$disk2 = Get-SCVirtualHardDisk -VM $VM | Select-Object -Skip 2 -First 1
$VM_disk0_freeSpaceValue = Get-FreeSpace $disk0
$VM_disk1_freeSpaceValue = Get-FreeSpace $disk1
$VM_disk2_freeSpaceValue = Get-FreeSpace $disk2
Set-SCCustomPropertyValue -CustomProperty $VM_disk0_freeSpaceProperty -InputObject $VM -Value $VM_disk0_freeSpaceValue
Set-SCCustomPropertyValue -CustomProperty $VM_disk1_freeSpaceProperty -InputObject $VM -Value $VM_disk1_freeSpaceValue
Set-SCCustomPropertyValue -CustomProperty $VM_disk2_freeSpaceProperty -InputObject $VM -Value $VM_disk2_freeSpaceValue
If you have any questions, ask. I'll check in later.
Cheers!