| author | ilayrn |
|---|---|
| ms.service | azure-data-explorer |
| ms.topic | include |
| ms.date | 01/20/2020 |
| ms.author | ilayr |
The following table describes the maximum limits for Azure Data Explorer clusters.
| Resource | Limit |
|---|---|
| Clusters per region per subscription | 20 |
| Instances per cluster | 1,000 |
| Number of databases in a cluster | 10,000 |
| Number of follower clusters (data share consumers) per leader cluster (data share producer) | 100 |
| Recommended maximum extents per cluster | 10,000,000 |
Note
You can request higher limits for Number of databases in a cluster and Clusters per region per subscription. To request an increase, contact Azure Support.
The following table describes the limits on management operations performed on Azure Data Explorer clusters.
| Scope | Operation | Limit |
|---|---|---|
| Cluster | read (for example, get a cluster) | 500 per 5 minutes |
| Cluster | write (for example, create a database) | 1,000 per hour |