@Yuta Matsuzaki Welcome to Microsoft Q&A, thank you for posting your here!!
You can try to Export/Copy managed snapshots as VHD to a storage account in different tenant with below PowerShell.
Step:1 Create Snapshot of the managed disk.
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To create a snapshot using the Azure portal, complete these steps.
- In the Azure portal, select Create a resource.
- Search for and select Snapshot.
- In the Snapshot window, select Create. The Create snapshot window appears.
- For Resource group, select an existing resource group or enter the name of a new one.
- Enter a Name, then select a Region and Snapshot type for the new snapshot.
- For Source subscription, select the subscription that contains the managed disk to be backed up.
- For Source disk, select the managed disk to snapshot.
- For Storage type, select Standard HDD,
- Select Review + create.
Step: 2 Now Copy the managed snapshots as VHD to a destination storage account(General Purpose V2 type) in different tenant with below PowerShell.
#Provide the subscription Id of the subscription where snapshot is created
$subscriptionId = "yourSubscriptionId"
#Provide the name of your resource group where snapshot is created
$resourceGroupName ="yourResourceGroupName"
#Provide the snapshot name
$snapshotName = "yourSnapshotName"
#Provide Shared Access Signature (SAS) expiry duration in seconds e.g. 3600.
#Know more about SAS here: https://docs.microsoft.com/en-us/Az.Storage/storage-dotnet-shared-access-signature-part-1
$sasExpiryDuration = "3600"
#Provide storage account name where you want to copy the snapshot.
$storageAccountName = "yourstorageaccountName"
#Name of the storage container where the downloaded snapshot will be stored
$storageContainerName = "yourstoragecontainername"
#Provide the key of the storage account where you want to copy snapshot.
$storageAccountKey = 'yourStorageAccountKey'
#Provide the name of the VHD file to which snapshot will be copied.
$destinationVHDFileName = "yourvhdfilename"
# Set the context to the subscription Id where Snapshot is created
Select-AzSubscription -SubscriptionId $SubscriptionId
#Generate the SAS for the snapshot
$sas = Grant-AzSnapshotAccess -ResourceGroupName $ResourceGroupName -SnapshotName $SnapshotName -DurationInSecond $sasExpiryDuration -Access Read
#Create the context for the storage account which will be used to copy snapshot to the storage account
$destinationContext = New-AzStorageContext -StorageAccountName $storageAccountName -StorageAccountKey $storageAccountKey
#Copy the snapshot to the storage account
Start-AzStorageBlobCopy -AbsoluteUri $sas.AccessSAS -DestContainer $storageContainerName -DestContext $destinationContext -DestBlob $destinationVHDFileName
Source Link: https://learn.microsoft.com/en-us/previous-versions/azure/virtual-machines/scripts/virtual-machines-powershell-sample-copy-snapshot-to-storage-account#sample-script
Step:3 Now create disk from the VHD file
- In the Azure portal, select Create a resource.
- Search for and select Disks.
- In the Disks window, select Create. The Create Disk window appears.
- For Resource group, select an existing resource group or enter the name of a new one.
- Enter a Name, then select a Region and Source type as Storage blob and source blob and select the storage account location where you have copied the VHD in previous step.
- Select Review + create.
Navigate to Disks
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Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.
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