Explanation/Reference:
Explanation:
Host Priorities
Each cluster host is assigned a unique host priority in the range of 1 to 32, where lower numbers denote higher priorities. The host with the highest host priority (lowest numeric value) is called the default host. It handles all client traffic for the virtual IP addresses that is not specifically intended to be load-balanced.
This ensures that server applications not configured for load balancing only receive client traffic on a single host. If the default host fails, the host with the next highest priority takes over as default host.
Reference: Network Load Balancing Technical Overview
http://technet.microsoft.com/en-us/library/bb742455.aspx