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In SQL Server 2008 R2 Express the only mirroring alternative is "Witness only", however I can't find a good explenation to what this is. I would like to have a database on a virtual server and then have a local SQL Server that mirrors this database, in case the internet connection goes down, I want to fail-over on the local server. Any ideas on what SQL Server editions I need to be running on both ends? |
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For SQL 2008 you can run either Enterprise or Standard for mirroring: http://msdn.microsoft.com/en-us/library/ms188712.aspx The witness server itself can be Standard, Enterprise, Workgroup, or Express. The witness server is needed for automatic failover: http://technet.microsoft.com/en-us/library/ms175191.aspx |
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"Witness only" refers to the role that Express edition can play in a mirroring setup between higher editions. It can not be a principal or mirror. There is no "Witness only" mirroring setup |
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