Synology SA3200D Synology High Availability SHA User Guide for DSM 7.0 - Page 15

Chapter 3: Set Up and Configure an SHA Cluster 3. High-availability clusters must be created before you install Synology Directory Server. If you already have Synology Directory Server installed, follow the steps below to back up its data and configurations and then uninstall/reinstall the package. a. Back up Synology Directory Server using Hyper Backup. Refer to the respective articles for DSM 7.0 and DSM 6.2 for more instructions. b. Go to the Package Center and uninstall Synology Directory Server. c. Create a high-availability cluster. d. Reinstall Synology Directory Server and restore the package data and configurations using Hyper Backup. Refer to the respective help articles for DSM 7.0 and DSM 6.2 for instructions. 4. Once you've created the cluster, you will be redirected to the main page, and the system will perform the initial synchronization. All data on the active server will be fully synchronized to the passive server. Note: Do not use the original Hostname or IP address of the active server to access your Synology NAS. If services are transferred to another server after a failover, the original active server will become the passive server. If you continue to use the original device's Hostname or IP address, you will not be able to access the device's services in the event of a failover. Add a passive server to an existing cluster This section explains the process of adding a passive server to a existing cluster. For example, the active server currently in use and the passive server to be added to the cluster are both DS1621+. These servers will be referred to as Server A and Server B, respectively. 1. Refer to steps 1-4 in Create a cluster with two new Synology NAS to set up your passive server (Server B). 2. Sign into the active server with an account belonging to the administrators group. 3. Open Synology High Availability. 13