About Release 7.0
This site contains documentation for HPE Ezmeral Data Fabric release 7.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.0 Installation
This section contains information about installing and upgrading HPE Ezmeral Data Fabric software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a HPE Ezmeral Data Fabric cluster.
- Planning the Cluster
  Describes information and factors used in planning your cluster.
  - Select Services
    This section describes some of the services that can be run on a node.
  - Cluster Design Objectives
    This section describes some of the work that your cluster performs, and identifies key design considerations.
  - Minimum Cluster Size
    All data-fabric production clusters must have a minimum of four data nodes except for HPE Ezmeral Data Fabric Edge.
  - Cluster Hardware
    Describes important hardware-architecture considerations for your cluster.
  - Service Layout in a Cluster
    Provides an overview of segregating services on different nodes.
    - Node Types
      Depending on the size of your cluster, nodes may or may not perform specialized work.
    - Service Layout Guidelines for Large Clusters
      Describes how to install and segregate services on large clusters.
    - Service Layout Guidelines for Replication
      Based on the use case, replicating HPE Ezmeral Data Fabric Database tables and HPE Ezmeral Data Fabric Streams may require the installation of Data Fabric Gateways and the HBase client on one or more nodes.
    - Data Fabric Monitoring Storage Options
      Describes various storage options for Data Fabric Monitoring. The Control System relies on data-fabric monitoring components to display metrics, but can function without the monitoring components. Using data-fabric monitoring to store logs is optional.
    - Example Cluster Designs
      Describes how to design a Data Fabric cluster for maximum availability, fault-tolerance, and performance.
    - Plan Initial Volumes
      Describes why it is important to define volumes.
  - Security Considerations
    Planning for security will help you identify security shortcomings and address them before you go into production.
  - User Accounts
    This section identifies how to organize authorized users of the cluster.
  - Next Step
    After you have a complete cluster plan, you are ready to prepare each node.
- Installing Core and Ecosystem Components
  Describes how to install HPE Ezmeral Data Fabric software and ecosystem components with or without the Installer.
- Installing the HPE Ezmeral Data Fabric File Store
  Describes how to install File Store software with or without the Installer.
- Installing HPE Ezmeral Data Fabric Object Store
  Describes installation of the HPE Ezmeral Data Fabric Object Store software with or without the Installer.
- Installing Kubernetes Interfaces for Data Fabric
  This section describes how to plan for and install the Container Storage Interface (CSI) Storage Plugin and the Kubernetes Interfaces for Data Fabric FlexVolume Driver.
- Upgrading Core or EEP Components
  Depending on your current configuration, you may choose to upgrade the release version (core), ecosystem components, clients, or monitoring components.
- Setting Up Clients and Services
  Describes how to set up and use interfaces to an HPE Ezmeral Data Fabric cluster from a client computer.
- Setting Up the Control System
  Describes how to configure and access the Control System.
- Migrating to the HPE Ezmeral Data Fabric
  Provides instructions for migrating business-critical data and applications from an Apache Hadoop cluster to an HPE Ezmeral Data Fabric cluster.
- Applying a Patch
  You can apply a patch by using the Installer, by using the command line (a manual process), or by using an Installer Stanza.
7.0 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
7.0 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Ezmeral Data Fabric products, including the file system, Database (Key-Value and JSON), and Event Streams.
Other Docs
This section contains release-independent information, including: Installer documentation, Ecosystem release notes, interoperability matrices, security vulnerabilities, and links to other data-fabric version documentation.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

Service Layout Guidelines for Replication

Based on the use case, replicating HPE Ezmeral Data Fabric Database tables and HPE Ezmeral Data Fabric Streams may require the installation of Data Fabric Gateways and the HBase client on one or more nodes.

Guidelines for Installing Gateways

When you configure replication for HPE Ezmeral Data Fabric Database tables or HPE Ezmeral Data Fabric Streams, data-fabric gateways provide one-way communication between a source data-fabric cluster and a destination cluster. It is recommended to install at least three gateways on the destination cluster. Installing two or more gateways on a destination cluster allows for replication failover in the event that one gateway is unavailable. Installing three gateways on a large cluster enables better throughput for data replication. Installing more than three gateways can improve availability but is not likely to improve replication performance.

Guidelines for Installing HBase Client

When you configure replication for HPE Ezmeral Data Fabric Database tables, the HBase client is not required by default. However, you must install the HBase client to replicate HPE Ezmeral Data Fabric Database tables in the following situations:

You plan to perform autosetup table replication using the HPE Ezmeral Data Fabric Database C API. In this case, you must install the HBase Client on the node where the C application will run.
You plan to perform autosetup table replication using the maprcli table replica autosetup command without direct copy. In this case, you must install the HBase Client on the node where you submit the maprcli table replica autosetup command. For more information about autosetup table replication, see Replica Autosetup for HPE Ezmeral Data Fabric Database Tables.