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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?
GCP PCA · Question 10 · Resilience Procedures
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:
To meet the Disaster Recovery requirements (RPO of 15 minutes, RTO of 1 hour), how should you configure the architecture?
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:
To meet the Disaster Recovery requirements (RPO of 15 minutes, RTO of 1 hour), how should you configure the architecture?
Answer options:
Take daily snapshots of all VMs and store them in a multi-region Cloud Storage bucket.
Deploy a warm standby environment in a secondary region with asynchronous database replication.
Deploy an active-active architecture across three regions with synchronous database replication.
Use Cloud Backup and DR to back up VMs every 15 minutes to a secondary region.
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