Shared File Storage Forecast
AWS EFS Pricing Calculator
Model Regional vs One Zone storage, IA access, and throughput before EFS becomes a recurring line item.
- No signup
- Instant results
- ~2 min
Rates reviewed
Read the full breakdown — Amazon EFS Pricing covers billing dimensions, traps, and a 30-day cleanup plan.
Storage deployment
us-east-1list rates, pricing as of 2026-10-17. Data transfer and backup costs are excluded. Source: AWS public pricing.
IA storage is $0.016/GB-mo with Elastic throughput ($0.025 with Bursting/Provisioned, $0.0133 One Zone); reads billed in step 2.
EFS Archive is $0.008/GB-mo with a 90-day minimum — Regional file systems with Elastic throughput only.
Capacity & throughput
Bursting throughput is included with storage — no extra charge modeled.
$0.01 per GB read from Infrequent Access.
$0.03 per GB read from or tiered into Archive.
$0.01/GB when Standard data transitions to IA.
Estimated EFS Cost
Storage + throughput line items
Total Monthly Cost
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FactualMinds runs storage cost reviews that compare EFS, EBS, and S3 for shared-file workloads — often surfacing 20–35% savings from class and throughput tuning.
Talk to FinOps Experts →Who This Tool Is For
Platform teams, data engineers, and FinOps leads sizing shared NFS file systems for ECS, EKS, Lambda, or batch workloads.
Why We Built This Tool
EFS bills combine storage class, IA access patterns, and optional throughput modes — easy to underestimate when only Standard Regional rates are quoted.
What Problem It Solves
- Deployment choice. Compare Regional multi-AZ vs One Zone storage on the same capacity.
- IA economics. Model Infrequent Access storage plus read access charges together.
- Throughput modes. See when provisioned or elastic throughput adds meaningful cost.
Pair with our cloud cost optimization service or the S3 pricing calculator for object storage comparison.
Frequently Asked Questions
Where do these EFS prices come from?
Rates are AWS published us-east-1 list prices (AWS EFS pricing), pricing as of 2026-10-17.
EFS vs EBS vs S3 — when does EFS win?
EFS fits shared POSIX file access across many compute instances (ECS, EKS, Lambda with EFS mount). EBS is block storage per instance; S3 is object storage. Use this calculator when multiple workloads need the same file system.
What is One Zone storage?
One Zone EFS stores data in a single Availability Zone at roughly half the Regional rate. You trade multi-AZ durability for cost — suitable for dev/test or workloads with independent DR copies.
When does EFS Archive make sense?
EFS Archive stores data accessed a few times a year or less at $0.008/GB-month (vs $0.016 for IA and $0.30 for Standard, us-east-1), with $0.03/GB for reads and for tiering data in, a 90-day minimum storage duration and a 128 KiB minimum billable file size. It is available only on Regional file systems using Elastic throughput, so the calculator ignores the Archive share for One Zone or Bursting/Provisioned modes.
Does this include data transfer or backup?
No. Cross-AZ/cross-region data transfer, AWS Backup, and EFS Replication charges are excluded.
How accurate is this vs the AWS Pricing Calculator?
For storage and IA access at list rates, estimates should be within ~$1 of AWS Pricing Calculator for the same inputs. Throughput modeling is simplified.
When should I use provisioned throughput?
Provisioned throughput guarantees MiB/s regardless of file system size — useful for large sequential workloads. Bursting scales with stored GB and is free beyond storage cost.
