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Chapter 1. Introduction to using Dell EMC PS Series back end

This document contains information about configuring Red Hat OpenStack Platform (RHOSP) to use one or more Dell EMC PS Series back ends. It also includes instructions about how to address volume size discrepancies between Dell EMC PS Series devices and the OpenStack Block Storage service.

Prerequisites

  • You intend to use only Dell EMC PS Series devices and drivers for Block Storage back ends.
  • You have deployed your RHOSP overcloud with the RHOSP director with a properly-functional Block Storage service.
  • You have deployed and configured your Dell storage device as a storage repository.
  • You have deployed a Dell EMC PS Series Group and it is accessible through SSH.
  • You have the necessary credentials to connect to the Group manager of the available Dell EMC PS Series Group (the CHAP and Group manager credentials).
  • You have the username and password of an account with elevated privileges. You can use the stack user that you create to deploy the overcloud. For more information, see Preparing the undercloud in the Director Installation and Usage guide.

When you deploy RHOSP with the director, you must also define and orchestrate all major overcloud settings with the director. This ensures that the settings persist through any further overcloud updates. For more information about deploying RHOSP with the director, see the Director Installation and Usage guide.

This document explains how to orchestrate your Dell EqualLogic back end configuration to the Block Storage service on the overcloud. This document does not discuss the different deployment configurations that are possible with the back end. For more information about the different deployment configurations that are available, see the product documentation for your device.

Note

Director has the integrated components to deploy only a single instance of a Dell EqualLogic back end.

Deploying multiple instances of a Dell EqualLogic back end requires a custom back end configuration. For more information, see the Custom Block Storage Back End Deployment Guide.

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