The Denodo Dashboard tool is considered as deprecated from Denodo Platform 6.0 and there is a similar tool like a dashboard known as the Diagnostic & Monitoring Tool.
The Denodo Platform 8.0 provides a web tool - [Diagnostic & Monitoring Tool](https://community.denodo.com/docs/html/browse/8.0/en/vdp/dmt/introduction/introduction) for real time monitoring of the current state of an [environment](https://community.denodo.com/docs/html/browse/8.0/en/solution_manager/administration/basic_concepts/basic_concepts#environments), a [cluster](https://community.denodo.com/docs/html/browse/8.0/en/solution_manager/administration/basic_concepts/basic_concepts#clusters) or a Virtual DataPort server.
For metadata replication, I would recommend configuring an **External Database** as a metadata repository. With this configuration, the Virtual DataPort servers of a cluster can share the same external database and so the changes made in one of the servers will be propagated to the other nodes automatically.
If you wish to stick to the Derby database then use the **Export** and **Import** option of the Virtual DataPort for sharing the metadata to all the nodes of the cluster.
For detailed information, take a look at [Storing the Metadata on an External Database](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/server_configuration/storing_catalog_on_external_database/storing_catalog_on_external_database#storing-the-metadata-on-an-external-database) and [Exporting and Importing the Server Metadata](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/exporting_and_importing_the_server_metadata/exporting_and_importing_the_server_metadata#exporting-and-importing-the-server-metadata) sections of the Virtual DataPort Administration Guide.
Hope this helps!