Microsoft® SQL Server 2012 Unleashed

Building Solutions with One or More HA Options

When you have the fundamental foundation in place, as described in the preceding section, you can move on to building a tailored software-driven high-availability solution. Which HA option(s) you should be using really depends on your HA requirements. The following high-availability options are used both individually and, very often, together to achieve different levels of HA:

AlwaysOn Failover Clustering Instance (FCI)

AlwaysOn Availability Groups

Failover Cluster Services

SQL clustering

Data ...