How many databases can be mirrored on a single instance of Microsoft SQL Server?


It is frequently asked by the DBAs or SystemAdmins or Customer that how many databases can be mirrored on a single instance of Microsoft SQL Server?

Answer of the above question is you can configure 10 databases for 32-bit operating system.On a 32-bit system, database mirroring can support a maximum of about 10 databases per server instance because of the numbers of worker threads that are consumed by each database mirroring session.

For 64-Bit Operating system you can mirror more than 10 databases depending on the number of processors and worker threads. Many company has deployed more that 10 Databases as mirrored.

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1 thought on “How many databases can be mirrored on a single instance of Microsoft SQL Server?

Thanks for the comment, will get back to you soon... Jugal Shah

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