An enterprise runs a suite of business-critical production workloads on Compute Engine virtual machines. The operations team needs to establish a post-deployment maintenance strategy that satisfies the following requirements: Keep virtual machine instances running without downtime during Google-initiated host infrastructure maintenance. Automatically recover and restart the virtual machine instances if an underlying host crash or hardware failure occurs. Eliminate the need for manual administrative intervention during standard maintenance events. Which configuration should you implement on the Compute Engine instances?

Set the onHostMaintenance policy to MIGRATE and set the automaticRestart policy to true.: ### What the Solution Is In Google Cloud Compute Engine, the instance availability policy determines how virtual machine (VM) instances behave during host events such as planned infrastructure maintenance or unplanned hardware failures. Setting `onHostMaintenance` to `MIGRATE` and `automaticRestart` to `true` establishes automated resilience and high availability for deployed compute workloads. ### How It Meets the Requirements - **Zero-Downtime Host Maintenance**: Setting the `onHostMaintenance` property to `MIGRATE` enables **Live Migration**. When Google performs planned maintenance on physical host hardware, the hypervisor moves running VM instances to an alternative host in the same zone without stopping the guest operating system or dropping network connections. - **Automated Crash Recovery**: Setting `automaticRestart` to `true` ensures that if a physical host experiences an unexpected crash, kernel panic, or hardware failure, Google Cloud automatically restarts the virtual machine on a healthy host without requiring manual operator intervention. - **Minimal Operational Overhead**: Both policies execute automatically within the Compute Engine control plane, completely eliminating manual failovers and ticketing during routine infrastructure updates. ### Key Advantages and Capabilities - **Live Migration**: Maintains memory state, ephemeral storage, IP addresses, and open TCP connections during maintenance. - **Autonomous Self-Healing**: Automatically provisions replacement host resources and restarts guest instances following unexpected outages. - **Default High Availability**: Aligning with recommended production baselines ensures continuous availability for critical enterprise systems. - **SLA Protection**: Helps applications meet demanding recovery time objectives (**RTO**) and availability Service Level Agreements. ### Why This Is Optimal This configuration directly fulfills all operational requirements by leveraging native platform resilience mechanisms. It avoids workload disruption during planned maintenance while ensuring rapid automated recovery after unexpected infrastructure incidents.

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Section: Assisting with the support of deployed solutions

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An enterprise runs a suite of business-critical production workloads on Compute Engine virtual machines. The operations team needs to establish a post-deployment maintenance strategy that satisfies the following requirements:

Keep virtual machine instances running without downtime during Google-initiated host infrastructure maintenance.
Automatically recover and restart the virtual machine instances if an underlying host crash or hardware failure occurs.
Eliminate the need for manual administrative intervention during standard maintenance events.

Which configuration should you implement on the Compute Engine instances?

Set the onHostMaintenance policy to MIGRATE and set the automaticRestart policy to true.

Set the onHostMaintenance policy to MIGRATE and set the automaticRestart policy to false.

Set the onHostMaintenance policy to TERMINATE and set the automaticRestart policy to false.

Redeploy the application software using updated Google Cloud Marketplace packages during every scheduled maintenance window.

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