Powershell Tip #127: Wait for EMC Avamar Backup to be completed By powershellgu | November 25, 2016 0 Comment Tip: You need to wait until the EMC Avamar Backup client finishes the backup. An easy way to do that is to check if the processes avtar and avvss are running. PowerShell do { Start-Sleep -Seconds 1 } while (Get-Process -Name avtar, avvss -ErrorAction SilentlyContinue) 1234 do{ Start-Sleep -Seconds 1} while (Get-Process -Name avtar, avvss -ErrorAction SilentlyContinue)