Hi. Can you refresh me on a basic concept of Availability groups infrastructure? If you have a primary replica and secondary replica in synchronous-commit mode that you intend to provide HA -- i.e., automatic failover with no data loss -- does
that by definition mean that they're in the same data center? But what if that data center becomes unavailable (unlikely, but possible)? Can synchronous-commit happen across two data centers, or is that by definition DR? Thanks.
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