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Mirroring failover


Mirroring failover

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SQLisAwE5OmE
SQLisAwE5OmE
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Akkare (2/11/2013)
How many databases we can put in mirroring

Microsoft suggests 10 databases to be mirrored in a single instance, but I have seen more. I guess there will be some performance degradation if there are more than 10.

Also if automatic failover happens all db failover start same time ?


Regarding auto failover, it's depends on which database has issues with mirroring.....if you are asking about a scenario where the whole instance going down and each of the mirroring failover to mirror side.....then, I still think it will failover one by one. I did not encounter this scenario....as of now.

Regards,
SueTons.

Regards,
SQLisAwe5oMe.
KumarVelayutham
KumarVelayutham
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I have come across the below nice tutorials.

Refer http://sqlcat.com/sqlcat/b/technicalnotes/archive/2010/02/10/mirroring-a-large-number-of-databases-in-a-single-sql-server-instance.aspx

Automatic failover failovers all the principal databases to mirror server .

Regards,
Kumar
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