1Z0-997-25 Question 146
Select 2You are migrating an on-premises e-commerce application comprised of multiple web, application, and database servers to Oracle Cloud Infrastructure (OCI). The business requires minimal downtime and a smooth rollback option if tests fail. You decide to use Oracle Cloud Migrations to perform this move. Which two actions must you implement as part of a minimal-downtime migration strategy?
- A
Install the Oracle Cloud Migrations Agent on each source server to replicate workloads into OCI.
- B
Use the Oracle Cloud Infrastructure Data Transfer Appliance for a one-time bulk import of your virtual machine images.
- C
Deploy a Container Engine for Kubernetes cluster to serve as an intermediate migration landing zone for your VMs.
- D
Conduct a test cutover of the replicated workloads and then finalize cutover after validation.
- E
Configure always-on block volume replication for each source disk into an OCI Block Volume.
Show answer and explanation
Correct answers: A, D
Explanation
Oracle Cloud Migrations streamlines the process of moving on-premises workloads to OCI with minimal downtime by deploying a Migration Agent to replicate servers at the disk and configuration level. The agent approach supports incremental sync, test cutovers, and final cutovers, all of which reduce downtime and ease rollback. For additional information, refer to the official Oracle Cloud Migrations documentation, which outlines best practices for installing the Migration Agent, creating replication jobs, and performing phased cutovers.
- A. Correct.
Correct: Installing the Oracle Cloud Migrations Agent on each source server is required for incremental replication. This agent automatically copies your server data and configurations to OCI, enabling a smooth transition with minimal downtime.
- B. Incorrect.
Incorrect: The Oracle Data Transfer Appliance is designed for large, one-time data migration, but it does not inherently support incremental replication or quick rollback. It is less suitable for a minimal-downtime scenario where repeated syncs and fast cutover are needed.
- C. Incorrect.
Incorrect: Container Engine for Kubernetes (OKE) is useful for containerized applications, not for directly migrating VM-based workloads. You would not use OKE as a landing zone for traditional VMs with Oracle Cloud Migrations.
- D. Correct.
Correct: You should perform a test cutover into OCI, validate functionality, and then finalize production cutover. This process ensures minimal disruption and provides a rollback path if tests fail.
- E. Incorrect.
Incorrect: While block volume replication can replicate data at the block level, it is not the primary method used by Oracle Cloud Migrations for capturing entire server configurations and performing incremental updates. The built-in agent approach is recommended for complete server replication if you require a quick cutover and rollback path.