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 Asynchronous (EE) 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