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Remove unused Data Explorer clusters#

Cost Optimization · Data Explorer · Rule · 2022_03 · Important

Regularly remove unused resources to reduce costs.

Description#

Billing starts for an Azure Data Explorer (ADX) cluster after it is provisioned. To store data in an ADX cluster, you must first create a database. Clusters without any databases are considered unused and can be removed to reduce costs and management overhead.

Additionally, ADX clusters on a paid tier can stopped. Stopping an ADX cluster de-allocates and removes compute resources. While in the stopped state, compute charges are not incurred. Any data stored in the cluster is persisted while the cluster is stopped.

Recommendation#

Consider removing Data Explorer clusters that have no databases and are not used.

Notes#

This rule applies when analyzing ADX clusters deployed (in-flight) and running within Azure. If the cluster is stopped, this rule is ignored.

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