Hyper-V(2012R2) Backup with Checkpoints(Snapshot) and Export - What to consider ?

Question

good evening
Today I recognized that a VM Snapshot (excuse
a checkpoint) can be exported  with
Windows Server 2012R2. 
The subsequent import resulted in a
functional VM in saved state.  
Question: What concerns a backup to a deduplicated Drive
with the following PowerShell
commands?
# Backup running VM's on a hyper-v 2012R2
# (p) by steini'14
$rootPath = "I:\VMBackup"
#create Backup Path of the Day
$path = new-item -ItemType Directory -Path "$rootPath\$(Get-Date -f yy_MM_dd_HH-mm)"
# Do Snapshot and export and "Merge!" Snapshot/Checkpoint for each vm on this host.
foreach ($vm in get-vm){
    write-host "Start: $($vm.Name)"
    $snap = $vm |checkpoint-vm -SnapshotName "BackupJob $(Get-Date -f yy_MM_dd_HH-mm)" -Passthru
    $snap | Export-VMSnapshot -Path $Path.FullName
    $snap | Remove-VMSnapshot
Start-DedupJob -Volume $path.Root -Type Optimization -Wait
#PrepareDisk:
#Add-WindowsFeature -name FS-Data-Deduplication
#Enable-DedupVolume I:
#Set-DedupVolume g: -MinimumFileAgeDays 0
#Start-DedupJob -Volume i: -Type Optimization -Wait

Answer 1

Hi ,
I am not familiar with powershell .
#create Backup Path of the Day
$path = new-item -ItemType Directory -Path "$rootPath\$(Get-Date -f yy_MM_dd_HH-mm)"
I think it will create a new folder to store the export image when the script start to run .
Also the disk space for storing these image is a factor what you can think of .
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.