Cross Tenant Cross Region Resource Migration

Question

Hello,

We have around 20 VMs, 2 SQL server with Always on set up and couple of machines which has dynamic GP hosted on a subscription in Europe region. We initially wanted to move it to a different subscription and realised both belong to different directories. We then planned to move the subscription across directories and then move resources across subscriptions. However we realised the current set up is in Europe region and we want the infra to be moved to US region.

Can i get some suggestions and easiest way not to mess up with the infra and migrate them all?

Answer 1

Hi @Jahnavi,

Welcome to Microsoft Q&A Forum, thank you for posting your query here!

In order to achieve this requirement, let me provide you couple of solutions here please choose it from this depending on your requirement

1. If you want to Migrate the subscription from One tenant to Another tenant
   A) Follow below steps

1. Note Important: Move subscription tenant you have two options below

If you opted for Move subscription tenant to No, Only the billing will be transfer from Personal account to Business account, but all the resources will be in Personal account

If you opted for Move subscription tenant to yes, All the resources and billing will be moved from Personal account to Business account

Before transferring, please download all the invoices and Azure RBAC roles

Except the users, Permissions, App Registrations will not be moved, you need to export and import to the permissions from Personal account to Business account

I Suggest raise a case with Microsoft they will help you to transfer from the backend below is the Support link Refer: below link contact Azure support

Refer: below link: https://learn.microsoft.com/en-us/azure/role-based-access-control/transfer-subscription?WT.mc_id=Portal-Microsoft_Azure_SubscriptionManagement#understand-the-impact-of-transferring-a-subscription

2) If you want to migrate only 20 servers and the Always On setup from a total of 100 servers, while keeping the remaining 80 servers in the original subscription, you can achieve this by moving only the required resources between tenants without transferring the entire subscription. Here’s an example approach

A) To achieve this, the VMs need to be in paired regions. Since Europe and the US are part of Azure's paired region setup, you can configure disaster recovery from the primary region in Europe to the secondary region in the US

Using Azure Site Recovery (ASR):
Use Azure Site Recovery (ASR) for DR Between Regions (Within the Same Tenant)

While ASR doesn't support cross-tenant replication directly, it does support replication between regions in the same tenant. You can replicate your Azure VMs from a source region to a target region within the same tenant, then follow these steps to replicate to a different tenant:

Set up ASR within the Source Tenant:

• Enable Azure Site Recovery (ASR) in the source tenant and configure replication for the VMs that need DR.
  • Set up replication from the source region to the target region in the same tenant.

Use Shared Access Signature (SAS) for Cross-Tenant Replication:

• After replicating the VM disks to the target region within the source tenant, use a SAS URL to transfer the disks and snapshots to a storage account in the target tenant.

B) You cannot directly migrate the sql server always on is enabled for this you need to rebuild the server in sql server in the destination

Refer: https://learn.microsoft.com/en-us/azure/azure-vmware/migrate-sql-server-always-on-availability-group

3) Take the snapshot of the vm's and rebuild that in the designation region and tenant

let us know if you have any further queries. I’m happy to assist you further.   

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