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Difficulty: HardHybrid and VMware Cloud on AWS Migrations

A global logistics firm needs to migrate 120 virtual machines (VMs) from an on-premises VMware vSphere 7.0 environment to a newly provisioned VMware Cloud on AWS (VMC) Software-Defined Data Center (SDDC). The workload consists of 80 stateless web/application servers that must remain online during migration with zero service disruption, and 40 stateful database and backend processing servers that can tolerate a maximum downtime of 10 minutes during a scheduled maintenance window. The on-premises data center is connected to AWS via a 10 Gbps AWS Direct Connect connection. The company has a multi-account AWS architecture where several spoke VPCs are connected via a customer-managed AWS Transit Gateway (TGW) in a central network account. The VMC SDDC is connected via a VMware Transit Connect gateway. The solution must ensure that resources in the spoke VPCs can access the migrated VMs using private DNS names, and that the migration is completed within the downtime constraints. Which two actions should the solutions architect recommend to meet these requirements?

  1. Configure VMware HCX Replication Assisted vMotion (RAV) to migrate the stateless web and application servers concurrently without downtime, and use HCX Bulk Migration for the stateful database and backend servers to replicate data in the background and execute a scheduled switchover during the maintenance window.Answer
  2. Peer the customer-managed AWS Transit Gateway with the VMware Transit Connect gateway, configure routing propagation between them, and associate the Route 53 Private Hosted Zone containing the SDDC resource records with all the spoke VPCs.Answer
  3. C
    Use HCX Cold Migration for the stateful database and backend servers to guarantee data consistency, and use standard HCX vMotion sequentially for the web and application servers to achieve zero downtime.
  4. D
    Configure the VMC SDDC connectivity by attaching the VMware Transit Connect gateway directly to a Direct Connect Gateway, and configure transitive routing rules on the Direct Connect Gateway to enable communication between the spoke VPCs and the SDDC VMs.
  5. E
    Associate the Route 53 Private Hosted Zone directly with the VMware Transit Connect gateway to enable global resolution, and configure the spoke VPCs to use the on-premises DNS servers as forwarders via the Direct Connect connection.

Answer

To meet the requirements, the solutions architect should use VMware HCX Replication Assisted vMotion (RAV) for the web/application servers, use HCX Bulk Migration for the database servers, peer the customer-managed AWS Transit Gateway with the VMware Transit Connect gateway, and associate the Route 53 Private Hosted Zone with the spoke VPCs.
Using VMware HCX Replication Assisted vMotion (RAV) ensures zero downtime for the concurrent migration of the 80 web/application VMs. Using HCX Bulk Migration for the database VMs allows the bulk replication of data with a controlled switchover within the 10-minute window. Peering the customer-managed AWS Transit Gateway with the VMware Transit Connect gateway provides the necessary network path between the spoke VPCs and the SDDC VMs. Associating the Private Hosted Zone with the spoke VPCs enables seamless DNS resolution of the VMC SDDC resources.

Step-by-Step Solution

1
Analyze the migration downtime limits and concurrency requirements for the VMs.
The 80 web/application VMs require zero downtime and concurrent migration. The 40 database/backend VMs can tolerate a 10-minute maintenance window.
This establishes the criteria for selecting the appropriate VMware HCX migration method.
2
Evaluate HCX migration options against the requirements.
HCX RAV is selected for zero-downtime concurrent migration. HCX Bulk Migration is selected for database VMs because it replicates data in the background and allows switchover to be scheduled during the 10-minute window.
HCX RAV prevents downtime for web servers, while HCX Bulk Migration minimizes database cutover downtime.
3
Determine the network routing architecture between the VMC SDDC and the spoke VPCs.
Establish a transit gateway peering connection between the customer-managed AWS Transit Gateway and the VMware Transit Connect gateway.
Standard Direct Connect Gateway routing does not support transitive VPC-to-VMC routing, so peering the transit gateways is necessary.
4
Configure DNS resolution for the migrated VMC SDDC resources.
Associate the Route 53 Private Hosted Zone containing the VMC SDDC DNS records with all spoke VPCs.
Private Hosted Zones must be associated with VPCs to allow resources within those VPCs to resolve the DNS records.

Key Concept

VMware Cloud on AWS migration methods (HCX RAV vs Bulk Migration) and hybrid network routing using Transit Gateway peering and Route 53 DNS resolution.
Estimated Time:3m 0s
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Topics

Hybrid and VMware Cloud on AWS Migrations

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