decrease RAM on vsphere 5.5 clients using powershell

[LarryTech]

hello

I have vsphere clients with 4gb ram deployed and wish to reduce this amount to 1 gb, they are running w8.1

can I do this using the powershell cli software and script?

I can do this one by one by powering down each and then decreasing RAM within the vsphere interface and then powering back on but I need a better and faster way

and if one can do this by using powershell is there a readymade script I can use or edit?

thanks

[bayupw · Accepted solution]

Hi

With PowerCLI you can use cmdlets Set-VM with parameter MemoryGB something like below:

Get-VM VM1 | Set-VM -MemoryGB 2

or

Get-VM $VMName | Set-VM -MemoryGB $memorysize -Confirm:$false

If you want to power the VM off first, you can do this

Get-VM $VMName | Stop-VM -RunAsync -Confirm:$false

#or

Get-VM $VMName | Shutdown-VMGuest -Confirm:$false

#set memory in GB

Get-VM $VMName | Set-VM -MemoryGB $memorysize -Confirm:$false

#then power it on

Get-VM $VMName | Start-VM -RunAsync -Confirm:$false

References:

vSphere PowerCLI Reference Set-VM: vSphere 5.5 Documentation Center

VMware KB: Managing virtual machines using PowerCLI

Thanks,

Bayu

[LarryTech]

thank you very much for the information and the links you provided

I'm going to try this on a few test machines soon