When managing Azure Virtual Machines, upgrading from F-series to Fsv2-series can provide significant cost savings and performance improvements. This policy recommends transitioning to newer Fsv2 instances to optimize your cloud infrastructure spending.
Why This Policy Matters
The Fsv2-series offers substantial benefits over the original F-series:
Cost Efficiency: Up to 14% lower monthly costs
Performance Upgrade: Newer processor architecture
Consistent Specifications: Similar core and memory configurations
Detailed Cost Analysis
Comparative Cost Example
Standard_F2 instance:
2 vCPUs
4 GB RAM
Monthly cost: $72.27 (East US region)
Standard_F2s_v2 instance:
2 vCPUs
4 GB RAM
Monthly cost: $61.76
Savings: $10.51 (14% reduction)
Implementation Guide
Infrastructure as Code Transformation Example (Terraform)
Before (Outdated F-Series)
resource "azurerm_virtual_machine" "example" {
vm_size = "Standard_F2"
# Other configuration parameters
}
After (Upgraded Fsv2-Series)
resource "azurerm_virtual_machine" "example" {
vm_size = "Standard_F2s_v2"
# Other configuration parameters
}
Manual Migration Steps
Assess Current Infrastructure
Inventory all F series virtual machines
Verify compatibility with Fsv2 series
Plan Migration
Schedule maintenance window
Backup existing virtual machines
Test Fsv2 compatibility
Execute Migration
Stop current virtual machine
Change VM size to corresponding Fsv2 series
Restart virtual machine
Best Practices
Gradual Transition: Migrate machines in phases
Performance Testing: Validate application performance after migration
Cost Monitoring: Track actual savings post-migration
Recommended Tools
Infracost: Automatically detect and suggest F to Fsv2 series upgrades
Azure Cost Management: Track and validate cost savings
Azure Advisor: Provides additional rightsizing recommendations
Practical Examples
Scenario 1: Development Environment
Current Setup: 10 Standard_F2 machines
Potential Monthly Savings: $105.10
Annual Impact: Approximately $1,261.20 saved
Scenario 2: Production Workload
Current Setup: 50 Standard_F4 machines
Potential Monthly Savings: $2,525.50
Annual Impact: Approximately $30,306 saved
Considerations and Caveats
Potential Limitations
Some legacy applications might require specific testing
Minor configuration adjustments might be necessary
Temporary service interruption during migration
When to Avoid
Highly specialized workloads with strict compatibility requirements
Machines with complex custom configurations
Environments with immediate performance-critical constraints
Frequently Asked Questions (FAQs)
How difficult is the migration process?
The migration is typically straightforward, involving a simple VM size change and restart.
Are there performance differences between F and Fsv2 series?
Fsv2 series offers improved processor performance with similar core/memory configurations.
Can Infracost help me identify these upgrade opportunities?
Yes, Infracost includes automated detection of cost optimization opportunities like F to Fsv2 series upgrades.
What if my specific VM configuration isn’t directly mappable?
Consult Azure documentation for precise equivalent configurations or contact Azure support.
How quickly can I realize cost savings?
Cost savings are immediate upon successful migration and VM restart.
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