# Access to Pentaho Data Catalog

Pentaho Data Catalog has the capability of accessing and registering data stored either on Amazon, MinIO, or HDFS. Multiple connections in PDI are required to access Data Catalog and the resources that it manages:

* To access Data Catalog, you will need to know the authentication type used, instance URL, and your account credentials.
* To access S3 resources from Data Catalog, see [Create a VFS connection](/pdia-data-integration/9.3-data-integration/data-integration-perspective-in-the-pdi-client/virtual-file-system-browser/create-a-vfs-connection-in-pdi.md).
* To access HDFS resources from Data Catalog, see [Connecting to a Hadoop cluster with the PDI client](/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/connecting-to-a-hadoop-cluster-with-the-pdi-client-article.md).


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