In this video, we’ll walk through how to set up a Backup (Secondary) Domain Controller and DHCP Failover in Windows Server 2025. This setup ensures redundancy, reliability, and high availability for your Active Directory and DHCP services — so your network stays online even if the primary server goes down. ⚙️ What You’ll Learn in This Video ✅ How to prepare your environment for a secondary domain controller ✅ How to configure network settings on the backup server ✅ How to install and promote a new server to a Domain Controller (DC2) ✅ How to install and authorize DHCP on the backup server ✅ How to configure DHCP Failover for redundancy (Load Balance or Hot Standby mode) ✅ How to test and verify replication and DHCP failover status