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IOPS provisioning

As explained in MongoDB 8.0 in Action, Third Edition

Provisioned IOPS is a storage configuration that reserves a specified maximum input/output operation rate for a database workload.

IOPS provisioning reserves a configurable maximum input/output rate for an AWS-backed database cluster, producing more consistent performance and lower p90 latency than standard IOPS. section 10.2.4

Use the setting with these trade-offs and constraints:

  • Selecting Provision IOPS changes the storage type from general-purpose SSD to provisioned IOPS SSD, affecting performance characteristics and cost. section 10.2.4
  • Provisioned IOPS SSD volumes target their performance 99.9% of the time, compared with 99% for general-purpose SSD volumes. section 10.2.4
  • AWS-backed M30+ clusters support provisioned IOPS; local NVMe SSD clusters must use standard IOPS. section 10.2.4

AWS M30+ cluster

When creating an AWS-backed M30+ cluster, select Provision IOPS to replace general-purpose SSD storage with provisioned IOPS SSD storage. Without that option, Atlas uses standard IOPS: 3,000 minimum, increasing to a 3:1 IOPS-to-storage ratio for storage of at least 1 TB, up to 16,000 IOPS. section 10.2.4

How MongoDB 8.0 in Action, Third Edition covers it

How deep it goes
Defines performance behavior, reliability targets, defaults, limits, and provider constraints without detailing underlying I/O internals.
Examples
Uses AWS-backed M30+ clusters, 1 TB storage, a 3:1 IOPS-to-storage ratio, and the 16,000-IOPS ceiling.
What it assumes
Requires an AWS-backed M30+ cluster; local NVMe SSD clusters remain limited to standard IOPS.
What you can do after
Operate/configure eligible AWS clusters with provisioned or standard IOPS according to performance and storage requirements.
How it connects
Connects provisioned IOPS with general-purpose SSD, standard IOPS, storage capacity, p90 latency, and local NVMe SSD.
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This explainer was generated by Manning's knowledge graph from the text of MongoDB 8.0 in Action, Third Edition. The section links point to the parts of the book it draws on.