How to Configure Database Availability Group in Exchange Server 2019

Database Availability Group 2019

In this blog, we’ll go through the installation of Exchange 2019 Database Availability Group with two-node members. The DAG will have a Primary network as well as one replication network. The file share witness is another member server in the domain that has no Exchange 2019 server roles installed. I am using my domain controller as a file share witness server.

In my environment

SRV2019-DC (File share witness server)

                    10.0.0.20

Exch2K19-1 (Node 1)

                   10.0.0.24

                  192.168.0.11

Exch2K19-2 (Node 2)

                   10.0.0.25

                 192.168.0.12

Database Availability Group Configuration Exchange 2019

First, we need to prepare the Environment for the DAG

1- I have two networks one Primary and one Replication for my DAG replication for all the nodes which I am planning to add in DAG.

network connection

2- Make sure these networks are in a Different Class of IP Address.

Primary Network

internet protocol ipv4 properties

3- Replication Network.

internet protocol ipv4

Replication IP Address should ping with other replication IP Address – So that Database Availability Group replication will happen through these Networks.

How to Create a Computer Account

We need to create a computer account to pre-stage the Cluster Cluster Name Object.

4- Open active directory users and computers > expand your local domain > select computers > right side under descriptions right-click > click New and click Computer Account.

active directory users and computers

5- Type a DAG Name and click ok.

create computer account active directory

6- Right-click on dag computer name and select Disable Account.

active directory computer account

7- Click Yes.

disable computer account active directory

8- Click OK.

active directory object disabled

9- Give Full Control for Exchange Trusted Subsystems.

Right-click on DAG computer name and select properties.

active directory computer account

10- Select security tab > Select Exchange Trusted Subsystem > select full control and click apply.

computer account properties security

11- Now under security click the Add button.

computer account properties security

12- Select Object Types.

enter the object name to

13- Select Computers and click ok.

enter the object name type

14- Type your First node name > click check names and click ok.

enter the object names to

15- First Node Computer account has been added > select full control box to give permission and click apply.

computer account properties security

16- Under the security tab, click the add button again and Type second node computer name > click check names and click ok.

enter the object names to

17- Give full control > click Apply for the Permissions and click ok.

computer account properties security

Now we are creating a DAG in Exchange Server 2019.

The Exchange Trusted Subsystem should be a member of the local Administrator group on the specified witness server.

I am using my active directory server as a witness server.

18- Open active directory users and computers > expand domain controller > select Microsoft Exchange Security Group and then right Exchange Trusted Subsystem and select properties.

active directory users and computers

19- Select Member of and click the add button.

exchange trusted subsystem

20- Type administrator > click check names and click ok.

enter the object names to

21- Click OK.

exchange trusted subsystem properties

Create Database Availability Group

22- Login to Exchange Admin Center > select Servers > select Database Availability Groups and select + add button.

exchange admin center 2019

23- Type DAG name > Witness Server Name > Witness Location > Add Two DAG IP Address (Static IP for the DAG)

1 for Primary Site and 1 for DR site

If you have different subnet or different classes of IP Addresses on either Sites.
Have Two IP addresses for the DAG so that DAG resource can be online while failover on either site If you have only one Subnet then you can have only one IP Address for the DAG.

create and configure database availability group

Database Availability Groupe Membership

24- Now my DAG Configuration is Ready and Add a member to it > Select Manage DAG Membership.

exchange admin center 2019

25- Select the + add icon.

manage database availability group membership

26- Select first node > click add and click ok.

database availability group add member server

27- Select Save.

manage database availability group membership

28- First node member completed successfully and click close.

database availability group server successfully added

29- Now you can add the 2nd DAG member > again Select Manage DAG Membership.

configure database availability group exchange 2019

30- Select the + Add icon.

add member server database availability group exchange 2019

31- Select 2nd node > click the add button and click ok.

database availability group add member servers

32- Click Save.

manage database availability group membership servers

33- 2nd node completed successfully and click close.

database availability group server successfully added

34- Now both the nodes successfully added.

created database availability group exchange 2019

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