Move multiple disks from one vm to another vm (KB#00102)

Hello Folks,

Adding another solution for one unique challenge I got from my customer. 

Challenge - Customer used to move multiple vmdk files from one vm to another vm in vcenter server. Actual challenge is the time in hand for this operation and number of vmdks to remove are always around 15, 18 or 20 per vm. This activity used to have multiple VMs. This become more challenging at the time of roll back once we have moved all disks from source to target vm. That much of vmdks to move and in short period of time can lead to confusion and human error too.

Solution - I created below powercli script which drastically decrease the time require in such activity and roll back too become very easy with it. Chance of human error is 99% lesser now.

Below is the code -

Function move-vmdk{
clear
$time = Get-Date
#It will record the timestamp before starting this activity
Write-Host "Current time is $time"
$sourcevm = Read-Host "Enter the source VM Name "
Write-Host "Total number of disk on source vm is" (Get-HardDisk -VM $sourcevm).count -ForegroundColor yellow
$fd = Get-HardDisk -VM $sourcevm
$TargetVM = Read-Host "Enter the target VM Name "
Write-Host "Total number of disk on target vm is" (Get-HardDisk -VM $TargetVM).count -ForegroundColor Green
Write-Host "This script works with file name of disk to move so please mention the filename of each disk to move in notepad and save it in C:\temp with disklock.txt name"
#save the disk’s location for all the targeted disks to path C:\Temp in notepad file named diskloc.txt
$diskfile = Get-Content -Path C:\Temp\diskloc.txt
$confirm = Read-Host -Prompt "Are you sure you want to process for this disk migration (Y/N) "
If ($confirm -eq "y") {
Foreach ($loc in $diskfile){
$trgVM= Get-VM -Name $TargetVM
$disk=get-vm -name $SourceVM | Get-HardDisk | Where-Object {($_.Filename -eq $loc)}
Remove-HardDisk $disk -Confirm:$false
New-HardDisk -VM $trgVM -DiskPath $loc
Write-host (" ")
}
}
$time = Get-Date
#It will record the timestamp after completion of this activity
Write-host "Operation has been completed succesfully"
Write-Host "Current time is $time"
Write-Host "Total number of disk on target vm is" (Get-HardDisk -VM $TargetVM).count -ForegroundColor Green
Write-Host "Total number of disk on source vm is" (Get-HardDisk -VM $sourcevm).count -ForegroundColor yellow
}

Below is the sample output

Note that time taken is just 32 seconds to move four VMDK files. Just to add, size of vmdk doesn't change the time for this migration.

Hope you will find it useful if you too have such requirement! Any doubt or thought, plesae feel free to comment.

Cheers!