Add a new node into existing SQL Server Always On Availability Groups#sqlserver#cluster #sqldatabase

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* Add a new node into existing SQL Server Always On Availability Groups *
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We prepared the following VMs for our demo purposes.
Server Name IP address Role
SQLNode1 10.93.253.5 Primary Node of SQL AG
SQLNode2 10.93.253.6 Secondary Node of SQL AG
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SQLNode3 10.93.253.10 Tertiary Node of SQL AG
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VDITest3 10.93.253.7 Domain Controller and Active Directory

## Steps to add a new node into existing SQL Server Always On Availability Groups
Part-I
o Server Installation
o Assign static IP address
o Turn off the Windows firewall
o Hostname and IP Verification
o Add SQLNode3 as a domain member
o Enable Failover Cluster feature
o Add a new node into the existing failover cluster

Part-II
o Install SQL Server 2019 and enable AG feature
o Verify SQL Server Always On Availability Groups dashboard health
o SQL Server network configurations
o Restore SQL Server Always On Availability Group database on the new replica SQL instance
o Failover testing for the SQL Server Always on Availability group

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You should go through the following articles and build the infrastructure before proceeding with this article.
1. Configure Domain Controller and Active Directory for SQL Server Always On Availability Groups
o It configures the domain controller and active directory features.
o Add the virtual machines to the domain created above.
2. Configure failover clusters, storage controllers and quorum configurations for SQL Server Always On Availability Groups
o Windows failover cluster configurations
o iSCSI target and initiator configurations
o File share witness confirmation as Cluster quorum
3. Install SQL Server 2019 on Windows Server 2016 with SQL Server Always On Availability Groups
o Synchronous mode Always On configurations for SQLNode1 and SQLNode2

Note : Flow the Process shown in video.

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Thanks & Regards,
Chitt Ranjan Mahto "Chirag"
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Note: All scripts used in this demo will be available in our website.
Link will be available in description.

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