1Z0-1123-25 Question 83
Single answerYou need to migrate a three-tier application running on a VMware-based on-premises data center to an Oracle Cloud VMware Solution environment. The application� database is critical and cannot tolerate more than a brief disruption. You have deployed the Hybrid Cloud Extension (HCX) component and established network connectivity. Which migration strategy will best minimize downtime for the final cutover in this scenario?
- A
Perform a cold migration of the virtual machines using HCX during business hours.
- B
Use HCX Replication-Assisted vMotion to replicate the workloads and schedule a cutover during a low-traffic window.
- C
Rely on native VMware vMotion alone to migrate all workloads in real time without replication.
- D
Export the VMs as OVAs from on-premises and import them into Oracle Cloud VMware Solution.
Show answer and explanation
Correct answer: B
Explanation
In production environments with minimal downtime requirements, using Hybrid Cloud Extension (VMware HCX) with Replication-Assisted vMotion (RAV) is the recommended strategy. It replicates the workloads to Oracle Cloud VMware Solution over time, then performs a quick cutover when ready. This minimizes user impact and downtime, aligning with best practices found in Oracle Cloud VMware Solution documentation and VMware HCX guidelines.
- A. Incorrect.
Incorrect. Cold migration in the middle of business hours would cause a complete outage of the application for the duration of the transfer. This does not meet the requirement of minimizing downtime.
- B. Correct.
Correct. HCX Replication-Assisted vMotion (RAV) creates a replica of the VM in the cloud and then synchronizes changes before performing a final switchover. This approach significantly reduces downtime by deferring the cutover to a maintenance window or off-peak period.
- C. Incorrect.
Incorrect. While VMware vMotion alone can work for some migrations, it typically requires a dedicated low-latency network, and large-scale data transfers without replication can take a long time. This approach may not guarantee minimal downtime for a critical workload, especially if network bandwidth or latency is limited.
- D. Incorrect.
Incorrect. Exporting and importing OVAs is a manual process that can introduce both extended downtime and configuration discrepancies. This approach is neither seamless nor optimized for large-scale VMware migrations with strict uptime requirements.