ExpertGCP PCA · Question 06 · Migration Plan
CASE STUDY: ShopGlobal
Company Overview:
ShopGlobal is an international e-commerce retailer. They are preparing for their largest annual sales event (Black Friday) and want to migrate off their aging on-premises infrastructure.
Current Technical Environment:
- 3 on-premises data centers (US-East, US-West, EU-Central).
- VMware vSphere environment with 500 VMs.
- Monolithic Java application running on Tomcat.
- Oracle RAC database for transactions.
- 50 TB of product images on SAN storage.
Business Requirements:
- Ensure 100% availability during the upcoming holiday season.
- Modernize the application architecture over the next 3 years.
- Reduce capital expenditure (CapEx) by shifting to an OpEx model.
Executive Statements:
- CEO: "Downtime during Black Friday costs us $1M per hour. We need bulletproof reliability."
- CFO: "We want to stop buying hardware. Move everything to a pay-as-you-go model."
- CTO: "We want to eventually move to microservices, but we don't have time to rewrite the app before the holidays."
Technical Requirements:
- Migrate the existing VMs to the cloud with minimal changes initially.
- Implement a global CDN for product images to reduce latency.
- Set up disaster recovery with an RPO of 15 minutes and RTO of 1 hour.
- Ensure PCI-DSS compliance for payment processing.
Constraints:
- The migration must be completed in 4 months (before the code freeze).
- The Oracle database license cannot be easily transferred to the cloud.
- The team has no experience with Kubernetes or containers yet.
QUESTION:
Given the 4-month timeline and the CTO's constraints, which migration strategy should you recommend for the VMware environment?
CASE STUDY: ShopGlobal
Company Overview:
ShopGlobal is an international e-commerce retailer. They are preparing for their largest annual sales event (Black Friday) and want to migrate off their aging on-premises infrastructure.
Current Technical Environment:
- 3 on-premises data centers (US-East, US-West, EU-Central).
- VMware vSphere environment with 500 VMs.
- Monolithic Java application running on Tomcat.
- Oracle RAC database for transactions.
- 50 TB of product images on SAN storage.
Business Requirements:
- Ensure 100% availability during the upcoming holiday season.
- Modernize the application architecture over the next 3 years.
- Reduce capital expenditure (CapEx) by shifting to an OpEx model.
Executive Statements:
- CEO: "Downtime during Black Friday costs us $1M per hour. We need bulletproof reliability."
- CFO: "We want to stop buying hardware. Move everything to a pay-as-you-go model."
- CTO: "We want to eventually move to microservices, but we don't have time to rewrite the app before the holidays."
Technical Requirements:
- Migrate the existing VMs to the cloud with minimal changes initially.
- Implement a global CDN for product images to reduce latency.
- Set up disaster recovery with an RPO of 15 minutes and RTO of 1 hour.
- Ensure PCI-DSS compliance for payment processing.
Constraints:
- The migration must be completed in 4 months (before the code freeze).
- The Oracle database license cannot be easily transferred to the cloud.
- The team has no experience with Kubernetes or containers yet.
QUESTION:
Given the 4-month timeline and the CTO's constraints, which migration strategy should you recommend for the VMware environment?
Answer options:
Refactor the Java application into microservices and deploy to Google Kubernetes Engine (GKE).
Use Migrate for Compute Engine to convert the VMs to native Google Compute Engine instances.
Use Google Cloud VMware Engine (GCVE) to lift and shift the VMs.
Replatform the application to App Engine standard environment.
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