To resize VMs using PowerShell with PowerCLI from a csv list, first install the software:
https://my.vmware.com/web/vmware/details?downloadGroup=PCLI650R1&productId=614
Then create a list of servers to resize and save it as a CSV file in C:\temp\VMs.csv:
Server01 Server02 Server03
Save the below as Something.PS1 and run from PowerCLI
Note: Change VCENTRE to your vCentre, this script will TURN THE SERVER OFF then give each VM two CPUs, one socket and 5GBs of RAM.
$me = Get-Credential
connect-viserver "VCENTRE" -User $me
$vms = get-content C:\Temp\VMs.csv
ForEach ($vm in $vms){
$vms | Shutdown-VMGuest –Confirm:$False
Sleep 60
$vms | Set-VM –MemoryGB 8 –NumCpu 2 –Confirm:$False
$vms | Start-VM
}
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