Overview

Introduction

Welcome to the Creating and Managing Database Availability Groups Practice Lab. In this module, you will be provided with the instructions and devices needed to develop your hands-on skills.

Learning Outcomes

In this module, you will complete the following exercises:

  • Exercise 1 - Preparing the System for Database Availability Group
  • Exercise 2 - Working with Database Availability Groups

After completing this lab, you will be able to:

  • Add the Exchange Trusted Subsystem group to the local Administrator group.
  • Install the FileServer feature on the file share witness.
  • Install the Windows Cluster feature.
  • Turn off Windows Firewall.
  • Create a Database Availability Group (DAG).
  • Manage a DAG.

Exam Objectives

The following exam objective is covered in this lab:

  • 1.2 Plan, deploy, and manage high-availability solutions for mailbox databases.

Lab Duration

It will take approximately 1 hour to complete this lab.

Exercise 1 - Preparing the System for Database Availability Group

The concept of Database Availability Group (DAG) was introduced in one of the earlier versions of Exchange Server. A DAG can be created and the mailbox servers are added as members of DAG. The feature of Failover Clustering needs to be installed on the DAG members. Before creating the DAG, there are certain preparatory steps that need to be performed on the system to make it DAG compliant. The preparatory steps are as follows:

  • Add the Exchange Trusted Subsystem group in Active Directory to the local Administrator group on the server that will be the file share witness.
  • Install the File Server feature on the file share witness.
  • Install the Failover Clustering feature on the devices.
  • Turn off Windows Firewall.

In this exercise, you will learn how to prepare the system for a database availability group by performing the following tasks:

  • Task 1 - Add the Exchange Trusted Subsystem group to the local Administrator group.
  • Task 2 - Install the FileServer feature on the file share witness.
  • Task 3 - Install the Windows Cluster feature on the devices.
  • Task 4 - Turn off the Windows Firewall on the devices.

Learning Outcomes

After completing this exercise, you will be able to:

  • Add the Exchange Trusted Subsystem group to the local Administrator group.
  • Install the FileServer feature on the file share witness.
  • Install the Windows Cluster feature.
  • Turn off Windows Firewall.

Exercise 2 - Working with Database Availability Groups

As an Exchange Server administrator, you need to ensure that the mailbox databases are not affected due to server failure. If you have hosted only a single copy of the mailbox databases on the Exchange Server, there are high chances of downtime. To ensure smooth functioning of the mailbox databases, it is recommended to deploy a Database Availability Group (DAG), which is a high availability model for Exchange Server. You can deploy multiple DAGs to protect the mailbox databases. An Exchange Server DAG can hold up to 16 servers. The database copies are replicated between the DAG members thereby ensuring the safety of the mailbox databases during server downtime or failures.

In this exercise, you will learn how to work with database availability groups by performing three tasks.

In task one, you’ll be shown how to create a Database Availability Group (DAG). Later in task two, you will go on to create a Database Availability Group (DAG) using the Exchange Management Shell.

The last task shows you how to manage a Database Availability Group (DAG) using the Exchange Management Shell.

Learning Outcomes

After completing this exercise, you will be able to:

  • Create a Database Availability Group (DAG).
  • Manage a DAG.

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