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Chapter 1. Introduction

This document describes how to configure OpenStack to use one or more Dell Storage Center back ends. The following sections assume that:

  • You intend to use only Dell Storage Center devices and drivers for Block Storage back ends
  • The OpenStack Overcloud has already been deployed through Director, with a properly-functional Block Storage service
  • The Dell storage device has already been deployed and configured as a storage repository
  • You have the necessary credentials for connecting to the Enterprise Manager and Dell Storage Center Group
  • You have the username and password of an account with elevated privileges. You can use the same account that was created to deploy the Overcloud; in Creating the stack user, we create and use the stack user for this purpose.

When you deploy Red Hat OpenStack Platform (RHOSP) through director, you must also define and orchestrate all major overcloud settings through director, in particular, the Block Storage service back end. This ensures that the settings persist through any further overcloud updates. For more information about deploying OpenStack through the Director, see Director Installation and Usage.

The purpose of this document is to explain how to orchestrate your Dell Storage Center back end configuration to the overcloud Block Storage service. This document does not discuss the different deployment configurations that are possible with the back end. To learn more about the different available deployment configurations, see the product documentation of your device.

When you are familiar with the resulting back end configuration you want to deploy, and its corresponding settings, see this document for instructions about how to orchestrate it through director.

Note

At present, the Director only has the integrated components to deploy a single instance of a Dell Storage Center back end. As such, this document only describes the deployment of a single back end.

Deploying multiple instances of a Dell Storage Center back end requires a custom back end configuration. See the Custom Block Storage Back End Deployment Guide for instructions.

Before deploying Red Hat OpenStack Platform (RHOSP) with a Dell Storage Center back end, review the following limitations:

  • For Dell EMC SC Series, snapshots of empty non-attached volumes are not supported. You must populate the volume or attach the volume before proceeding with snapshots. For more information, see https://bugs.launchpad.net/cinder/+bug/1616630.
  • For Dell EMC SC Series, cinder backup is not supported.
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