Configure the vCenter Server Database Server on the Replica

In the event of a failure, access to the Database Server is essential to a VMware vCenter Server high availability scenario.

Note: Specify the server name explicitly to prevent database auto-discovery problems.

To configure the vCenter Server Database Server on the Replica server

Do one of the following, depending on how your environment is configured:

If you used single machine (local) deployment, configure the ODBC settings as follows:
1. Install the Database Server on the Replica. Explicitly specify this instance on the Replica so that the Replica uses its local Database Server.
2. Ensure the Database Server Instance Name is the same as the one specified on the Master.
3. Ensure the Database Name is the same as the one specified on the Master.
4. Ensure the Database Server installation path and database files path are the same as those specified on the Master.

Or:

If you used distributed deployment, configure the ODBC settings as follows:
1. Do not install the Database Server on the Replica. Instead, specify the same remote Database Server that is specified on the Master.
2. Specify the same data source name (DSN) as on the Master. To do this, select Use an existing database server from the VMware vCenter Server Deployment Options - Step 1 screen and then enter the name of an already-configured DSN. Click No when asked if you wish to re-initialize the database and start over with a blank configuration.