1.

Which of the following is an upgrade step to database mirroring?(a) Switch to high performance (sync)(b) Perform a rolling upgrade(c) Switch back to high performance (sync)(d) None of the mentionedI had been asked this question in exam.This intriguing question comes from Database Mirroring topic in section Enterprise Data Management of SQL Server

Answer»

The correct answer is (b) Perform a rolling UPGRADE

Best explanation: Upgrade mirror, MANUAL FAILOVER to mirror, upgrade ORIGINAL principal, manual failover to original principal.



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