Windows Server Backup Using Powershell

Question

Hi
Am using the VSS to backup some directory to shared path. I want to backup again , at the time only backup modified files or new files, not all completely.
( differential backup )
add-pssnapin windows.serverbackup
$policy = New-WBPolicy
$fileSpec = New-WBFileSpec -FileSpec D:\old\*.*
Add-WBFileSpec -Policy $policy -FileSpec $filespec
$backupLocation = New-WBBackupTarget -NetworkPath \\xxxxx\Shared\
Add-WBBackupTarget -Policy $policy -Target $backupLocation
Set-WBVssBackupOptions -Policy $policy -VssCopyBackup
Start-WBBackup -Policy $policy
If you have realated to that cmdlet , please share it here.
Thanks in advance .
Karpahasundaram M.

Answer 1

Hi Karpahasundaram,
If you want to Back Up Modified Files to a Network location, please try to filter the files in a directory with the "lastwritetimeItem" property, then use the cmdlet "Copy-Item" to copy files.
Get-ChildItem c:\data -Recurse | where {!($_.psiscontainer) -AND $_.lastwritetime -gt (get-date).date} | ForEach {
Copy-Item -path $_.fullname -destination \\hyperv1\shared\backup}
Reference from:
Use PowerShell to Back Up Modified Files to the Network
If I have any misunderstanding, please let me know.
Best Regards,
Anna