EFS waste check
Idle EFS
idle_efs
What it finds
Idle EFS: one of the EFS checks in the storage optimization group. Checks in this group look for: storage that no workload reads, writes or needs any more: unattached volumes, stale snapshots and backups, data with no lifecycle rule.
Why it costs money
Storage bills per gigabyte-month whether or not anything uses it, and forgotten copies pile up quietly.
How it is detected
Zero client connections for 14 days
Detection confidence: HIGH. This is the criterion from our public docs. It runs in a local scan with your own read-only credentials.
AWS's own tools
AWS has a check on the same resource, with narrower or different criteria.
Checked against the AWS documentation.
Run it yourself
Nothing leaves your machine. The local scan has no telemetry.