What is Non-Instance Storage in AWS?

Summary

“Non-Instance Storage” refers to all storage consumed by AWS services other than EC2 instance storage attached directly to running virtual machines.

Description

In simple terms:
 

Total Non‑Instance Storage (GiB) = All provisioned or utilised storage that is not part of an EC2 instance’s ephemeral or instance‑store volumes.

It generally includes (but is not limited to):

• EBS Volumes (gp3, gp2, io1, st1, sc1)
• EBS Snapshots
• S3 Storage (Standard, IA, One-Zone IA, Glacier tiers, etc.)
• RDS Storage
• EFS Storage
• FSx Storage (FSx for Windows, Lustre, NetApp ONTAP)
• Backup Storage (AWS Backup vault usage)
• Other services with persistent storage (e.g., OpenSearch domain storage)

Confirmation Steps

Please note that non-instance storage values update every 24 hours, so consequently, AWS usage reports will take this long to reflect changes.