Google Compute Engine – Consider Using Current Generation Machine Types

When deploying Google Compute Engine virtual machines, choosing the right machine type can significantly impact your cloud infrastructure’s performance and cost-efficiency. First-generation N1 machine types are outdated, and Google recommends transitioning to more advanced second-generation options.

Why This Policy Matters

Performance and Cost Benefits

Google’s second-generation machine types provide substantial advantages:

• E2 Instance Type
  • Up to 31% cost savings compared to N1
  • Lowest total cost of ownership
  • Ideal for cost-sensitive workloads
• N2 Instance Type
  • Uses 2nd Gen Intel Xeon Scalable Processors (Cascade Lake)
  • Over 20% price-performance improvement
  • Supports up to 25% more memory per vCPU
• N2D Instance Type
  • Leverages 2nd Gen AMD EPYC (Rome) CPUs
  • Highest core count and memory for general-purpose VMs
  • Excellent for compute-intensive applications

Potential Cost Savings

Consider a typical scenario:

• Monthly N1 machine cost: $500
• Equivalent N2 machine cost: $400
• Annual savings: $1,200 per machine

With multiple machines, savings can quickly escalate into thousands of dollars annually.

Implementation Guide

Infrastructure as Code Transformation (Terraform)

Before (Outdated N1 Configuration):

resource "google_compute_instance" "legacy_vm" {
  machine_type = "n1-standard-4"
  # Other configuration remains the same
}

After (Recommended N2 Configuration):

resource "google_compute_instance" "optimized_vm" {
  machine_type = "n2-standard-4"
  # Other configuration remains the same
}

Manual Migration Steps

1. Inventory existing N1 instances
2. Identify equivalent N2 or E2 machine types
3. Plan migration during maintenance windows
4. Test performance and compatibility
5. Gradually replace instances

Best Practices

• Incremental Migration: Don’t replace all machines simultaneously
• Performance Testing: Validate workload compatibility
• Cost Monitoring: Track actual savings and performance metrics
• Regular Review: Continuously evaluate machine type efficiency

Recommended Tools

• Infracost: Automatically detect and estimate savings from machine type upgrades
• Google Cloud Cost Tools: Provide detailed cost and performance recommendations
• Cloud Monitoring: Track performance during and after migration

Example Scenarios

Web Application Hosting

• Before: N1 instance costing $750/month
• After: N2 instance at $550/month
• Result: $2,400 annual savings

Database Servers

• Before: N1 high-memory instance
• After: N2 optimized configuration
• Benefit: 22% improved price-performance

Considerations and Caveats

Potential Limitations

• Some legacy applications might require specific configurations
• Minimal performance gains for low-utilization workloads
• Migration complexity for large, distributed systems

When to Be Cautious

• Specialized workloads with unique requirements
• Applications with strict compatibility constraints
• Instances with custom machine configurations

Frequently Asked Questions (FAQs)