11. Can the data stored on a Cloud instance be encrypted?

11.1. AWS

Yes, you can improve security by encrypting the data at rest on ephemeral drives of a Cloud instance. (A QDS Hadoop cluster uses ephemeral drives for HDFS and for the intermediate output of MapReduce jobs.) Select Enable Encryption when configuring the cluster.

See also Enabling Encryption of Ephemeral Data in QDS Clusters.