How can I see the size of my Amazon Aurora DB cluster volume?

Aurora cluster volumes automatically scale as the amount of data in your database increases, up to a maximum of 64 tebibytes (TiB).

Important: Your cluster volume storage won't shrink, even if you delete data from the cluster. You'll continue to be charged for the amount of storage that was allocated. To reclaim the unused space in the cluster, create a new cluster, export the data to that cluster, and then delete the original cluster. You can monitor the size of your Aurora DB cluster in the Amazon RDS console or the Amazon CloudWatch console.

Using the Amazon RDS console

  1. Open the Amazon RDS console, and then choose the Region where you created your Aurora DB cluster.
  2. Choose Instances in the navigation pane, and then choose the DB instance that you want to monitor.
  3. In the CloudWatch section, search for [Billed] Volume Bytes Used or choose it from the list. The storage use appears on the graph.

Note: The Free Storage Space metric shows the amount of storage available for temporary tables and logs. This metric is for per-instance ephemeral, temporary volumes—not the cluster volume. You can increase the amount of free storage space for your instance by switching to a larger DB instance class. For more information, see Changing Your DB Instance Class.

Using the Amazon CloudWatch console

  1. Open the Amazon CloudWatch console, and then choose the Region where you created your Aurora DB cluster.
  2. Choose Metrics in the navigation pane.
  3. In the Search Metrics box, type VolumeBytesUsed, and then press Enter.
  4. Choose RDS > DbClusterIdentifier, EngineName.
  5. Choose your cluster. The storage use appears on the graph.

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Published: 2018-06-13