1 Download dataontap PS module and extract to c:\windows\system32\windowspowershell\1.0\modules
2 Import the netapp powershell module
Import-Module dataontap
3 define $28days as being todays date - 28 days
$28days = (get-date).adddays(-28)
4 connect to the controller
connect-nacontroller "controllername"
5 view the list of snapshots that are older than 28 days
Get-Navol | Get-NaSnapshot | where-object { $_.name -like "smvi_*" -and $_.created -lt $28days }
6 See what snapshots will be deleted
Get-Navol | Get-NaSnapshot | where-object { $_.name -like "smvi_*" -and $_.created -lt $28days } | remove-nasnapshot -whatif
7 Delete the snapshots
Get-Navol | Get-NaSnapshot | where-object { $_.name -like "smvi_*" -and $_.created -lt $28days } | remove-nasnapsho
