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Create-AzVmSnapshots.ps1
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Create-AzVmSnapshots.ps1
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<#
.SYNOPSIS
Script for creating Snapshots of all disks of a single VM and create a variable for you to use.
You can use this to create a managed disk by using an other command after creating the snapshot.
.DESCRIPTION
This script is intended to be run from PowerShell in your current AzContext
.EXAMPLE
$Snapshots = .\Create-AzVmSnapshots.ps1 `
-vmName FILESERVER `
-resourceGroupName Servers
.EXAMPLE
$osDiskSnapshot = .\Create-AzVmSnapshots.ps1 `
-vmName FILESERVER `
-resourceGroupName Servers `
-osDiskOnly
Created by RBNMK
#>
[CmdletBinding()]
param(
[parameter(mandatory = $true)] [string] $vmName,
[parameter(mandatory = $true)] [string] $resourceGroupName,
[parameter(mandatory = $true)] [string] $subscriptionId,
[parameter(mandatory = $false)] [switch] $osDiskOnly
)
### Check AZ Context
$Context = Get-AzContext
if (!$Context) {
Write-Warning "No Azure context found. Please login to your Azure account first."
Connect-AzAccount
}
elseif ($Context.Subscription.Id -ne $subscriptionId) {
Write-Warning "The subscription ID provided does not match the current context. Switching to the correct subscription."
Set-AzContext -SubscriptionId $subscriptionId
}
### Try to get all needed resources and declare variables
$Snapshots = @()
Try {
$Location = (Get-AzResourceGroup -Name $resourceGroupName -ErrorAction Stop).Location
}
catch {
Write-Warning "$($Error[0].Exception.Message)"
Break
}
Try {
$vmParams = @{
ResourceGroupName = $resourceGroupName
Name = $vmName
ErrorAction = 'Stop'
}
$virtualMachine = Get-AzVM @vmParams
}
catch {
Write-Warning "$($Error[0].Exception.Message)"
Break
}
$vmStatusParams = @{
ResourceGroupName = $resourceGroupName
Name = $vmName
Status = $true
}
$vmStatus = Get-AzVM @vmStatusParams
if ($vmStatus.Statuses.displaystatus -match "VM Running") {
Write-Warning -Message "The VM is currently running. It is recommended that you turn off the VM first! Turning off first.."
Stop-AzVM -ResourceGroupName $resourceGroupName -Name $vmName -Force | Out-Null
Do {
$vmStatus = Get-AzVM @vmStatusParams
Start-Sleep -Seconds 2
Write-Host "Checking VM status"
Write-Host "." -NoNewline
}
until ($vmStatus.Statuses.displaystatus -notmatch "VM Running")
Write-Host "Continuing with snapshot creation.."
}
### Get the OSDisk SKU
$OsDisk = Get-AzResource -ResourceId $virtualMachine.StorageProfile.OsDisk.ManagedDisk.Id | Select-Object Name, ResourceGroupName | Get-AzDisk
$OsDiskSku = $osDisk.Sku
$OsDiskSkuName = $osDisk.Sku.Name
$OsDiskSkuTier = $osDisk.Sku.Tier
$OsDiskTier = $osDisk.Tier
$OsDiskIOPSReadWrite = $osDisk.DiskIOPSReadWrite
$OsDiskMBpsReadWrite = $osDisk.DiskMBpsReadWrite
$OsDiskCaching = $datadisk.Caching
$OsDiskCaching = $virtualMachine.StorageProfile.OsDisk.Caching
switch ($OsDiskSkuName) {
"StandardSSD_LRS" { $OsDiskSnapShotSkuName = "Standard_LRS" }
default { $OsDiskSnapShotSkuName = $OsDiskSkuName }
}
Write-Verbose "$VMName OSDisk: $($virtualMachine.StorageProfile.OsDisk.Name)"
Write-Verbose "$VMName OSDisk SKU: $($OsDiskSku)"
Write-Verbose "$VMName OSDisk SKU Name: $($OsDiskSkuName)"
Write-Verbose "$VMName OSDisk SKU Tier: $($OsDiskSkuTier)"
Write-Verbose "$VMName OSDisk Caching: $($OsDiskCaching)"
### Create the snapshot for the OS Disk of the supplied VM
$snapshotConfigParams = @{
SourceUri = $virtualMachine.StorageProfile.OsDisk.ManagedDisk.Id
Location = $Location
SkuName = $OsDiskSnapShotSkuName
CreateOption = 'copy'
}
$Snapshot = New-AzSnapshotConfig @snapshotConfigParams
$snapshotParams = @{
SnapshotName = "$($virtualMachine.StorageProfile.OsDisk.Name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
ErrorAction = 'SilentlyContinue'
}
$SnapshotExists = Get-AzSnapshot @snapshotParams
if ($SnapshotExists) {
$updateSnapshotParams = @{
Snapshot = $Snapshot
SnapshotName = "$($virtualMachine.StorageProfile.OsDisk.Name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
}
$osDiskSnapshot = Update-AzSnapshot @updateSnapshotParams
}
else {
$newSnapshotParams = @{
Snapshot = $Snapshot
SnapshotName = "$($virtualMachine.StorageProfile.OsDisk.Name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
}
$osDiskSnapshot = New-AzSnapshot @newSnapshotParams
}
Write-Host "Creating snapshot.. $($osDiskSnapshot.Name)" -ForegroundColor Green
$Snapshots += [PSCustomObject]@{
vmName = $vmName
lun = "nolun"
type = "osdisk"
name = $osDiskSnapshot.Name
sku = $OsDiskSku
skuName = $OsdiskSkuName
skuTier = $OsDiskSkuTier
caching = $OsDiskCaching
Tier = $OsDiskTier
IOPSReadWrite = $OsDiskIOPSReadWrite
DataDiskMBpsReadWrite = $OsDiskMBpsReadWrite
}
### Create the snapshot(s) for the Data disks of the supplied VM
if ($osDiskOnly) {
Write-Host "Skipping datadisks..."
}
else {
if (!($virtualMachine.StorageProfile.DataDisks)) {
Write-Host "No datadisks found for $($VirtualMachine.Name)" -ForegroundColor Cyan
}
else {
foreach ($datadisk in $virtualMachine.StorageProfile.DataDisks | Sort-Object Lun) {
$Disk = Get-AzResource -ResourceId $datadisk.ManagedDisk.Id | Select-Object Name, ResourceGroupName | Get-AzDisk
$DataDiskSku = $Disk.Sku
$DataDiskDiskSkuName = $Disk.Sku.Name
$DataDiskSkuTier = $Disk.Sku.Tier
$DataDiskTier = $Disk.Tier
$DataDiskIOPSReadWrite = $Disk.DiskIOPSReadWrite
$DataDiskMBpsReadWrite = $Disk.DiskMBpsReadWrite
$DataDiskCaching = $datadisk.Caching
switch ($DataDiskDiskSkuName) {
"StandardSSD_LRS" { $DataDiskSnapshotSkuName = "Standard_LRS" }
default { $DataDiskSnapshotSkuName = $DataDiskDiskSkuName }
}
Write-Verbose "$VMName DataDisk: $($datadisk.Name)"
Write-Verbose "$VMName DataDisk SKU: $($DataDiskSku)"
Write-Verbose "$VMName DataDisk SKU Name: $($DataDiskDiskSkuName)"
Write-Verbose "$VMName DataDisk SKU Tier: $($DataDiskSkuTier)"
Write-Verbose "$VMName DataDisk Caching: $($DataDiskCaching)"
$snapshotConfigParams = @{
SourceUri = $datadisk.ManagedDisk.Id
Location = $Location
SkuName = $DataDiskSnapshotSkuName
CreateOption = 'copy'
}
$Snapshot = New-AzSnapshotConfig @snapshotConfigParams
$snapshotParams = @{
SnapshotName = "$($datadisk.name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
ErrorAction = 'SilentlyContinue'
}
$SnapshotExists = Get-AzSnapshot @snapshotParams
if ($SnapshotExists) {
$updateSnapshotParams = @{
Snapshot = $Snapshot
SnapshotName = "$($datadisk.name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
}
$dataDiskSnapshot = Update-AzSnapshot @updateSnapshotParams
}
else {
try {
$newSnapshotParams = @{
Snapshot = $Snapshot
SnapshotName = "$($datadisk.name)_snapshot_$(Get-Date -Format filedate)"
ResourceGroupName = $resourceGroupName
ErrorAction = 'Stop'
}
$dataDiskSnapshot = New-AzSnapshot @newSnapshotParams
}
catch {
throw
}
}
Write-Host "Creating snapshot.. $($dataDiskSnapshot.Name)" -ForegroundColor Green
$Snapshots += [PSCustomObject]@{
vmName = $vmName
type = "datadisk"
name = $dataDiskSnapshot.Name
lun = $datadisk.Lun
sku = $DataDiskSku
skuName = $DataDiskDiskSkuName
skuTier = $DataDiskSkuTier
caching = $DataDiskCaching
Tier = $DataDiskTier
IOPSReadWrite = $DataDiskIOPSReadWrite
DataDiskMBpsReadWrite = $DataDiskMBpsReadWrite
}
}
}
}
$Snapshots