Database mirroring is a reliable, high-availability solution in SQL Server 2008. Maximizing database availability is a top priority for most DBAs. It is hard to explain the pain a DBA goes through when a database goes down; you're unable to get it right back online, and at the same time you're answering pointed questions from your manager. Database mirroring will come to the rescue in certain scenarios, which we explain in this chapter. It will help you get the database back online with automatic or manual failover to your mirror database, adding another alternative to the SQL Server 2008 arsenal. This chapter explains database mirroring concepts, shows you how to administer the mirrored database, and provides an example demonstrating how to implement database mirroring. We also discuss the database snapshot, which you can use with database mirroring to read the mirrored databases.