Remove vSphere snapshot automatically

From version 7 of VMware workstation, a new function named AutoProtect is added, which makes it easier to create and remove snapshots automatically. Unfortunately, vSphere doesn’t have some function like that.

In my situation, I need to protect some crucial services, like configuration management database, by creating snapshots, which can be done by daily scheduled tasks. But I still need to delete old snapshots manually which was created 5 days ago. In another word, I need to keep only about 5 latest snapshots for each specified VM.

After some research, I find a tool named PowerCLI. I made some PowerShell scripts to delete snapshots.

Connect-VIServer localhost
$i = new-object System.Int32
$a = Get-VM "CM Database" | get-snapshot -name: 'Daily Backup'
$i = 0
while ($a.Count-$i -gt 5) {$a[$i] | remove-snapshot -confirm: $false; $i++;}
$a = Get-VM "SVN" | get-snapshot -name: 'Daily Backup'
$i = 0
while ($a.Count-$i -gt 5) {$a[$i] | remove-snapshot -confirm: $false; $i++;}
Disconnect-VIServer -confirm: $false

By running this script in PowerCLI environment, the snapshots of vm “CM Database” and “SVN” with a name “Daily Backup” will be deleted from older to newer, until only 5 left — to keep the 5 latest snapshots. All snapshots with other names will not be affected.

I saved this script to file C:\RemoveDailySnapshot.ps1. Create a batch file to run this script:

C:\WINDOWS\system32\windowspowershell\v1.0\powershell.exe -psc "C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\vim.psc1" -c ". \"C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scripts\Initialize-VIToolkitEnvironment.ps1\";C:\RemoveDailySnapshot.ps1"

Update: code above is for vSphere 4.x; below is for vSphere 5.0.

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -psc "C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\vim.psc1" -c ". \"C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1\";C:\RemoveDailySnapshot.ps1"

(You may need to change the path string in this code above.)
Finally, by adding this batch file as a Windows schedule task, the AutoProtect for vSphere has been reached.

I still wonder that why this useful function is not included in vSphere?

3 thoughts on “Remove vSphere snapshot automatically

    1. I’m sorry that I guess PowerCLI is only work with vCenter which need a Windows environment.
      You CANNOT run this script directly from ESX/ESXi.

  1. vCenter always runs on windows (server), meaning you always have powershell and can use PowerCLI. vCenter server communicates to ESX(i) to trigger the snaps and therefore – YES you can use this script to create and delete snaps for linux virtual machines (any virtual machine in fact) running on ESX(i) as long as the ESX server is managed by vCenter.

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