Overview page
The Overview page displays information about different elements on the Ozone cluster in the form of a consolidated dashboard. This page loads by default when you launch the Recon web user interface.
![](../images/ozone-recon-web-ui-overview.png)
Recon displays the following information from the SCM and the DataNodes on the
Overview page in the form of cards:
- Health of the DataNodes in the cluster. Clicking this card loads the DataNodes page.
- Number of pipelines involved in data replication. Clicking this card loads the Pipelines page.
- Capacity of the cluster. The capacity includes the amount of storage used by Ozone, by services other than Ozone, and any remaining storage capacity of the cluster.
- Number of storage containers in the SCM. If there are any missing containers reported, the Containers card is highlighted with a red border. You can then click the card to view more information about the missing containers on a separate page.
Recon displays following information from the Ozone Manager (OM) on the
Overview page:
- Number of volumes in the cluster
- Total number of buckets for all the volumes in the cluster
- Total number of keys for all the buckets in the cluster