VMware PowerCLI set Limit on vm CPU, Memory and Harddisk IOPS

clear
Add-PSSnapin VMware.VimAutomation.Core
$Admin ="tech-jockey\jockey-admin"
$Password = Get-Content c:\vccred\securestring.txt | convertto-securestring
$Credential = new-object -typename System.Management.Automation.PSCredential -argumentlist $Admin, $Password
Connect-VIServer tech-jockey-vCenter -SaveCredentials -Credential $Credential
$vmlist = get-vm

foreach ($vmm in $vmlist)
    {
    $item=get-vm $vmm |select NumCpu,MemoryMB
    $cpulimit=$item.NumCpu*2000
    $ramlimit=$item.MemoryMB+100
    get-VMResourceConfiguration -VM $vmm |Set-VMResourceConfiguration -CPULimitMhz $cpulimit -MemLimitMB $ramlimit
 
 
    $disk = Get-HardDisk -VM $vmm | where {$_.Name -ne "Hard Disk" }
    get-VMResourceConfiguration -VM $vmm | Set-VMResourceConfiguration -Disk $disk -DiskLimitIOPerSecond 38

    write-host $cpulimit
    Write-Host $ramlimit

 
    }