How to set the retain period of Files Share snapshot with scheduler by Azure Automation?

Question

I want to set the retention period of Files Share snapshot with scheduler by Azure Automation. 1, May I set the schedule of creating and deleting the snapshot at one runbook. (like create one snapshot at today and delete it after one month). 2, I want to get some snapshots by every day, week and month, can I decide the retain time. (Like keep the daily snapshot 15 days, the weekly snapshot 35days, and the Monthly snapshot 13months).
3, If it is so difficult, may I decide the snapshots that I want to delete, like the previous 10. If you know something about that, please write some comments below, thanks so much.

Answer 1

Some information for you to refer.

Try the command below to create snapshot, for its operating frequency, you could create a schedule for the runbook.

$connectionName = "AzureRunAsConnection"
try
{
    # Get the connection "AzureRunAsConnection "
    $servicePrincipalConnection=Get-AutomationConnection -Name $connectionName         

    "Logging in to Azure..."
    Add-AzureRmAccount `
        -ServicePrincipal `
        -TenantId $servicePrincipalConnection.TenantId `
        -ApplicationId $servicePrincipalConnection.ApplicationId `
        -CertificateThumbprint $servicePrincipalConnection.CertificateThumbprint 
}
catch {
    if (!$servicePrincipalConnection)
    {
        $ErrorMessage = "Connection $connectionName not found."
        throw $ErrorMessage
    } else{
        Write-Error -Message $_.Exception
        throw $_.Exception
    }
}

$SAResourceGroupName="joywebapp"
$StorageAccountName="joystoragev2"
$StorageAccountKey = (Get-AzureRmStorageAccountKey -ResourceGroupName $SAResourceGroupName -AccountName $StorageAccountName).Value[1]
$context=New-AzureStorageContext -StorageAccountName $StorageAccountName -StorageAccountKey $StorageAccountKey

$share = Get-AzureStorageShare -Context $context -Name "111"
$snapshot = $share.Snapshot()

Delete the snapshots created before one month:

$allsnapshots = Get-AzureStorageShare -Context $context | Where-Object { $_.Name -eq "111" -and $_.IsSnapshot -eq $true }


foreach($snapshot in $allsnapshots){
    if($snapshot.SnapshotTime -lt (get-date).AddMonths(-1)){
        $snapshot.Delete()
    }
}