Amazon EBS – Update io1/io2 Volumes to gp3

Amazon Elastic Block Store (EBS) volume selection can significantly impact cloud infrastructure costs. By strategically migrating from io1 and io2 volumes to gp3, organizations can achieve substantial cost savings without compromising performance for many workloads.

Why Switching from io1/io2 to gp3 Matters

EBS volume type selection directly influences both performance and cost. For workloads requiring less than 16K IOPS and 1000 MB/s Throughput, transitioning to gp3 volumes can reduce expenses by at least 50%.

Cost Comparison Example

• io1/io2 Volume (16TB): Approximately $3,000/month

• Equivalent gp3 Volume: Approximately $1,400/month

• Potential Monthly Savings: Up to $1,600

Detailed Analysis

Performance Characteristics

io1/io2: Provisioned IOPS volumes

• gp3: General purpose SSD with baseline performance

• Key Difference: gp3 offers more cost-effective performance for moderate workloads

Cost Reduction Mechanics

• Base Price: gp3 volumes have a lower baseline cost

• Granular Performance: Pay only for needed IOPS and throughput

• Predictable Pricing: Simplified cost management

Implementation Guide

Infrastructure-as-Code Example (Terraform)

Before (io1 volume)

resource "aws_ebs_volume" "expensive_volume" {
  type = "io1"
  size = 16
  iops = 5000
}

resource "aws_ebs_volume" "expensive_volume" {
  type = "io1"
  size = 16
  iops = 5000
}

resource "aws_ebs_volume" "expensive_volume" {
  type = "io1"
  size = 16
  iops = 5000
}

After (gp3 volume)

resource "aws_ebs_volume" "optimized_volume" {
  type             = "gp3"
  size             = 16
  throughput       = 500
  iops             = 5000
}

resource "aws_ebs_volume" "optimized_volume" {
  type             = "gp3"
  size             = 16
  throughput       = 500
  iops             = 5000
}

resource "aws_ebs_volume" "optimized_volume" {
  type             = "gp3"
  size             = 16
  throughput       = 500
  iops             = 5000
}

Manual Migration Steps

Snapshot existing volume

Create new gp3 volume from snapshot

Attach new volume

Verify performance

Delete original volume

Best Practices

• Performance Testing: Validate workload compatibility

• Gradual Migration: Test with non-critical workloads first

• Monitoring: Use CloudWatch to track performance metrics

Tools for Implementation

Recommended Solutions

• Infracost: Automatically detect and recommend volume type migrations

• AWS Cost Explorer: Analyze volume usage patterns

• Custom Scripts: Develop volume assessment automation

Example Scenarios

Web Application Hosting

• Current Setup: io2 volume with 8K IOPS

• Recommended Action: Migrate to gp3

• Estimated Savings: 40-60% reduction in storage costs

Development Environments

• Typical Workload: Low IOPS, moderate throughput

• Perfect Candidate: gp3 volume replacement

Considerations and Caveats

Potential Limitations

• Not suitable for high-performance computing

• Multi-Attach scenarios require specialized volume types

• Latency-critical applications might need careful evaluation

Performance Validation Checklist

✓ IOPS requirements

✓ Throughput needs

✓ Latency sensitivity

✓ Workload consistency

Frequently Asked Questions (FAQs)

How do I determine if my volume is a good candidate for migration?
Analyze your current volume’s IOPS, throughput, and performance requirements. If under 16K IOPS and 1000 MB/s, gp3 is likely a cost-effective option.

Will migrating to gp3 impact my application performance?
For most moderate workloads, there will be minimal to no performance difference. Always test and validate in a staging environment.

How quickly can I see cost savings?
Immediate upon volume type conversion. Savings are typically realized in the next billing cycle.

Does Infracost help with this migration?
Yes, Infracost can automatically detect potential volume optimization opportunities and provide detailed recommendations.

Are there any risks in migrating volumes?
 Minor risks include temporary downtime during migration. Always create snapshots and test thoroughly.