How do I manage EBS volumes to avoid unexpected costs in AWS?

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Cost optimization strategies

Optimize your Amazon EBS volumes costs with the following strategies.

Use AWS Trusted Advisor:

• Review the "Amazon EBS over-provisioned volumes" and "Underutilized Amazon EBS Volumes" reports to identify volumes that you can delete or downsize.
• These reports help you find attached volumes that are underused based on write activity.

Convert volume types:

• Migrate gp2 volumes to gp3: gp3 volumes are more cost-effective per GB compared to gp2 volumes.
• Migrate io1 volumes to io2: io2 volumes offer better performance and cost-effectiveness.

Use the AWS Systems Manager Automation document "AWSConfigRemediation-ModifyEBSVolumeType" to modify multiple EBS volumes based on tags.

Review and delete unnecessary volumes and snapshots.

Backup strategies

Select a backup strategy that supports your needs.

AWS Backup features:

• More cost-effective for volumes with partial use (for example, 1 TB volume with 300 GB used).
• Charges are based only on the amount of backup storage used and data restored.
• Incremental backups after the initial full backup.
• No minimum fee or setup charges.

EBS snapshots (used by EBS Lifecycle Policy) features:

• Billing is based on total unique data stored in each snapshot.
• Can be more expensive for frequently changing data with long retention periods.

Optimize backup costs:

• Implement appropriate retention policies to automatically delete old backups.
• Use AWS Backup's lifecycle policies to move older backups to cheaper storage tiers.
• Regularly review and clean up unused or unnecessary backups.
• Consider cross-AWS Region and cross-account backups for additional data protection and potential cost savings.

Best practices for EBS volume management

• Regularly monitor and analyze EBS volume usage with Amazon CloudWatch and Trusted Advisor.
• Implement tagging strategies to easily identify and manage volumes across your organization.
• Use automated tools and scripts to identify and act on optimization opportunities.
• Regularly review and update your backup and retention policies to align with your business needs and cost objectives.
• Consider AWS Backup for a more comprehensive and potentially cost-effective backup solution, especially for partially used volumes.
• For more information, see Best practice 14.2 - Select and configure EBS types aligned with performance requirements.

Related information

AWS Backup pricing

Amazon EBS pricing

AWS Pricing Calculator for Amazon EBS

AWS Pricing Calculator for AWS Backup