DSS Getting Started
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Data Lifecycle Manager terminology

DLM is a UI service that is enabled through DPS Platform. From the DLM UI you can create and manage replication and disaster recovery policies and jobs.

DLM Engine
Also referred to as the Beacon engine, this is the replication engine that is required for Data Lifecycle Manager. The DLM Engine must be installed as a management pack on each cluster that is to be used in data replication jobs. The engine maintains, in a configured database, information about clusters and policies that are involved in replication.
data center
The facility that contains the computer, server, and storage systems and associated infrastructure, such as routers, switches, and so forth. Corporate data is stored, managed, and distributed from the data center. In an on-premise environment, a data center is often composed of a single HDP cluster. However, a single data center can contain multiple HDP clusters.
IaaS cluster
A full HDP cluster on cloud VMs with Apache services running, such as HDFS, YARN, Ambari, Hiveserver2, Ranger, Atlas, and DLM Engine. Replication behavior is similar to on-premise cluster replication.
The data is on local HDFS.
cloud data lake or data lake
An HDP cluster on the cloud, using VMs, with data retained on cloud storage. A cloud data lake requires minimal services for metadata and governance, such as Hive metastore, Ranger, Atlas, and DLM Engine.
The data is on the cloud.
cloud storage
Any storage retained in a cloud account, such as Amazon S3 web service.
on-premise cluster
A full HDP cluster in a data center, with Apache services running, such as HDFS, Yarn, HMS, hiveserver2, Ranger, Atlas and Beacon. Replication behavior is similar to IaaS cluster replication.
The data is on local HDFS.
policy

A set of rules applied to a replication relationship. The rules include which clusters serve as source and destination, the type of data to replicate, the schedule for replicating data, and so on.

job

An instance of a policy that is running or has run.