AWS disk cost analysis: EBS vs instance storage

aws_prices.md

For a performance comparison of EBS-SSD vs instance store, see: https://gist.github.com/ktheory/3c3616fca42a3716346b

Instance storage

See: https://aws.amazon.com/ec2/pricing/on-demand/ (Pricing from 20190721)

Docs: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html

m5a.large    2    N/A    8 GiB    EBS Only    $0.086 per Hour
m5a.xlarge    4    N/A    16 GiB    EBS Only    $0.172 per Hour
m5ad.large    2    N/A    8 GiB    1 x 75 NVMe SSD    $0.103 per Hour
m5ad.xlarge    4    N/A    16 GiB    1 x 150 NVMe SSD    $0.206 per Hour
m5.large    2    8    8 GiB    EBS Only    $0.096 per Hour
m5.xlarge    4    16    16 GiB    EBS Only    $0.192 per Hour
m5d.large    2    8    8 GiB    1 x 75 NVMe SSD    $0.113 per Hour
m5d.xlarge    4    16    16 GiB    1 x 150 NVMe SSD    $0.226 per Hour

Price per GB-hour

# Charge per GB-hour is the same for each m5 series instance
In [6]: (0.206 - 0.172)/150
Out[6]: 0.00022666666666666668
In [7]: (0.103 - 0.086)/75
Out[7]: 0.00022666666666666668
In [8]: (0.226 - 0.192)/150
Out[8]: 0.00022666666666666668
In [9]: (0.113 - 0.096)/75
Out[9]: 0.00022666666666666668

# Per GB-month
In [10]: (0.113 - 0.096)/75 * 30
Out[10]: 0.0068000000000000005

So $0.0068/GB-month for instance storage

EBS

https://aws.amazon.com/ebs/pricing/

• GP2
  • $0.1 per GB-month
• IO1
  • $0.125 per GB-month of provisioned storage
  • $0.065 per provisioned IOPS-month

Conclusion

Instance storage is about half the price of IO1 with NVMe volumes and has much better performance.

(0.113 - 0.096)/75 * 30
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