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 ...
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