Configuring multiple BlackBerry Administration Service instances
If you install multiple BlackBerry Administration Service instances, you can configure a BlackBerry Administration Service pool to send requests to available instances and to avoid a single point of failure. When you install the first BlackBerry Administration Service instance in a BlackBerry Enterprise Service 10 domain, the default name of the BlackBerry Administration Service pool is the FQDN of the computer that you perform the installation on. If you want to configure a BlackBerry Administration Service pool after the installation process completes, you must change the name of the BlackBerry Administration Service pool. You can configure only one BlackBerry Administration Service pool in a BlackBerry Enterprise Service 10 domain.
If you want to configure a BlackBerry Administration Service pool using DNS round robin, you must change the pool name to the DNS name that maps to the IP address of each computer that hosts a BlackBerry Administration Service instance. You must also change the pool name if you changed the DNS name that maps to each BlackBerry Administration Service instance. If you want to configure a BlackBerry Administration Service pool using a hardware load balancer, you must change the pool name to the DNS name of the load balancer.