Property cannot be found on this object

[Carlos]

I am trying to execute de next script in powershell, but i receive the error:

 

Property 'VirtualQuantity' cannot be found on this object; make sure it exists and is settable.
At C:\Users\Administrator\Desktop\sample1.ps1:15 char:6
+ $Mem. <<<< VirtualQuantity = [string]1024

 

What can be the cause? Thanks in advance

 

get-wmiobject -namespace root\virtualization Msvm_VirtualSystemManagementService
$NewVM = gwmi -namespace root\virtualization Msvm_ComputerSystem | where {$_.ElementName -like "vir02"}

 

## First you need to locate the active settings of a virtual machine
$NewVM = gwmi -namespace root\virtualization Msvm_ComputerSystem | where {$_.ElementName -like "vir02"}
$VMSettingData = get-wmiobject -namespace root\virtualization Msvm_VirtualSystemSettingData -filter "SystemName = `'$($NewVM.Name)`'"

 

## Then find all the resources allocated to this VM. One particular resource is the Virtual Memory resource
$Vmem = gwmi -namespace root\virtualization Msvm_VirtualSystemSettingDataComponent | where {$_.PartComponent -like "*memory*"}

 

## Find an instance of Msvm_MemorySettingData that matches with $VMem.PartComponent
$Mem =  gwmi -namespace root\virtualization Msvm_MemorySettingData | where {$_.__PATH -like $($Vmem.PartComponent) }

 

## Now modify the quantity of RAM
$Mem.VirtualQuantity = [string]1024
$Mem.Reservation = [string]1024
$Mem.Limit = [string]1024

 

## Commit Changes
$VM_Service.ModifyVirtualSystemResources($NewVM.__PATH, $Mem.psbase.getText(1))

[Marco Shaw [MVP]]

> ## Now modify the quantity of RAM
> $Mem.VirtualQuantity = [string]1024
> $Mem.Reservation = [string]1024
> $Mem.Limit = [string]1024

At this point, once you've created the object and have saved it into
$mem, do this to see what properties are supported:

$mem|get-member -type property

It is possibly that $mem is $null due to a logic error.

I've also run into problems with Hyper-V. Make 100% sure you're running
a patched version, and not the beta packaged with Windows Server 2008.

Marco

--
*Microsoft MVP - Windows PowerShell
https://mvp.support.microsoft.com/profile/Marco.Shaw
*Co-Author - Sams Windows PowerShell Unleashed 2nd Edition
*PowerShell Co-Community Director - http://www.powershellcommunity.org
*Blog - http://marcoshaw.blogspot.com

[Carlos]

Thanks Marco,
yes, $mem was null due to a logic error, thanks!

One more question: what is the difference between VirtualQuantity,
Reservation and Limit, properties of Msvm_MemorySettingData that I can
change trough a powershell script?

"Marco Shaw [MVP]" <marco.shaw@NO_SPAMgmail.com> escribió en el mensaje
news:ubizp9jo...@TK2MSFTNGP05.phx.gbl...

[Marco Shaw [MVP]]

Carlos wrote:
> Thanks Marco,
> yes, $mem was null due to a logic error, thanks!
>
> One more question: what is the difference between VirtualQuantity,
> Reservation and Limit, properties of Msvm_MemorySettingData that I can
> change trough a powershell script?

These properties are listed here:
http://msdn.microsoft.com/en-us/library/cc136856(VS.85).aspx

Let us know if that helps.

[Carlos]

Thanks Marco :)

is there a relation between burstable RAM and guaranteed RAM that are available in other virtualization systems, and this properties (VirtualQuantity, Reservation and Limit),? I dont understand very well the meaning of them.

 

 

"Marco Shaw [MVP]" <marco.shaw@NO_SPAMgmail.com> escribió en el mensaje news:%23RPrIpm...@TK2MSFTNGP04.phx.gbl...

[Marco Shaw [MVP]]

Carlos wrote:
> Thanks Marco :)
> is there a relation between burstable RAM and guaranteed RAM that are
> available in other virtualization systems, and this properties
> (VirtualQuantity, Reservation and Limit),? I dont understand very well
> the meaning of them.

I think you should go asking this in a Hyper-V forum:
http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/threads/