Configure SQL Server Failover Cluster (High Availability) – Best Way!

Configure SQL Server Failover Cluster: This article gives an idea on using a Windows Server Failover Cluster (WSFC) with SQL Server for high availability and disaster recovery. A Windows Server Failover Cluster (WSFC) is a kind of independent servers that collab up to boost the availability of any application and services.

SQL Server leverages WSFC services and features to support Always On availability groups and SQL Server failover cluster instances. For more information Windows Server Failover Cluster with SQL Server – SQL Server Always On | Microsoft Learn

Configure SQL Server Failover Cluster (HA)

Prerequisites OR Steps to Be followed One-By-One for Complete Configuration of SQL Server Failover Clustering (HA)

1. Hyper-V Or Virtual Box Or VMWare: Install Hyper-V In Windows (SQLFCI-1)
2. VM Creation in Hyper-V: Install VM Or Configure VM In Hyper-V (SQLFCI-2)
3. Domain Controller (DC)/Active Directory: Configure Domain Controller (DC)/Active Directory (AD) (SQLFCI-3)
4. Three Windows Server VM/Machine (Domain Joined): Join Windows Machine To Domain (SQLFCI-4)
5. NIC/NAT Switch Across SQL VM’s (Not Mandatory In Lab/Demo): Create NIC/NAT Switch And Assign NIC To VM’s (SQLFCI-5)
6. Assign Static IP To The Machine: Assign Static IP To VM’s (SQLFCI-6)
7. iSCSI Target & Shared Disk: Configure ISCSI Disk/Target (SQLFCI-7)
8. Shared Disk Across Windows Server: Configure Shared Disk Across Windows Server (SQLFCI-8)
9. Windows Failover Cluster (WSFC) Configured For SQL VM’s: Windows Failover Cluster (WSFC) Configure For VM’s (SQLFCI-9)
10. Create SQL Server Service Account & Security Policy Update: SQL Server Service Account & Security Policy Update (SQLFCI-10)
11. Install SQL Server on SQLA (Node 1): Install SQL Server On Windows On Node 1 (SQLA) (SQLFCI-11)
12. Add SQL Server Node To SQL Server Failover Cluster (Default Instance): Add SQL Server To SQL Server Failover Cluster (SQLFCI-12) OR
13. Add SQL Server Node To SQL Server Failover Cluster (Named Instance): Add SQL Server Named Instance To SQL Server Failover Cluster (SQLFCI-13)

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