How does licensing work for computers that run SQL Server 2008 in failover scenarios?
A. Failover support, where servers are clustered together and set to pick up processing duties if one computer should fail, is available in Standard and Enterprise editions of SQL Server 2008. Under each of these editions, keeping a passive server for failover purposes does not require a license as long as the passive server has the same or fewer processors than the active server (under the per processor scenario). In the event of a failover, a 30-day grace period is allowed to restore and run SQL Server on the original active server.