5 documented AWS EFS cost inefficiencies, each with how to detect it and how to fix it.
AWS EFSCER-0198
Many organizations default to storing all EFS data in the Standard class, regardless of how frequently data is accessed. This results in inefficient spend for workloads with significant portions of data that are rarely read. EFS IA and...
AWS EFSCER-0123
When file systems are launched with Provisioned Throughput, teams often overestimate future demand - especially in environments cloned from production or sized "just to be safe." Over time, many workloads consume far less throughput than...
AWS EFSCER-0143
When replicating an EFS file system across AWS regions (e.g., for disaster recovery), the destination file system does not automatically inherit the source's lifecycle policy. As a result, files replicated to the destination will remain in...
AWS EFSCER-0190
EFS offers lifecycle policies that transition files from the Standard tier to Infrequent Access (IA) based on inactivity, significantly reducing storage costs for cold data. When this feature is not enabled, infrequently accessed files...
AWS EFSCER-0018
EFS file systems that are no longer attached to any running services - such as EC2 instances or Lambda functions - continue to incur storage charges. This often occurs after workloads are decommissioned but the file system is left behind....
