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Database Mirroring The Basics Christopher Shaw

Database Mirroring The Basics Christopher Shaw . What is Database Mirroring. Clustering? Yes, if you think about it this way. Geographically disbursed. Database level not server. Transaction Log Based. Kinds of Mirroring. Synchronous High Safety

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Database Mirroring The Basics Christopher Shaw

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  1. Database Mirroring The Basics Christopher Shaw

  2. What is Database Mirroring • Clustering? • Yes, if you think about it this way. • Geographically disbursed. • Database level not server. • Transaction Log Based

  3. Kinds of Mirroring • Synchronous • High Safety • Changes are not commit until committed on both machines. • Asynchronous (EE) • High Performance • Server does not wait for change to Propagate.

  4. Principal – source or active database • Mirror – destination or non-active database • Witness – system that is a tie vote breaker Mirror (Recovering) Principal Witness

  5. Simple Steps • Backup Database • Restore Database • Backup Log • Restore Log • Create End Points • Configure Mirror

  6. Considerations • Ease of Set up • Auto failover with witness • Mirror is not online • Performance • Enterprise Edition • User Accounts

  7. Questions

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