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 How to set up DB FailOver Always On SQL 2012

Author  Topic 

NguyenL71
Posting Yak Master

228 Posts

Posted - 2015-03-11 : 11:44:09
I was given a task to do a Database FailOver in SQL 2012 and I wonder has anyone had done this before or have good documentation
how to set it up and how to Failover to other nodes (Databases only). I was under impression to fail the whole instance instead
of the entire databases. I also google it to see if any good resources out there.

Thank you so much in advance.

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2015-03-11 : 11:58:02
You can use Availability Groups to failover databases. What edition of SQL Server do you have?

For instance-level, it's Failover clustering.

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/
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NguyenL71
Posting Yak Master

228 Posts

Posted - 2015-03-11 : 13:47:01
We using SQL Ent 64 Edition. Can you failover the DBs Only not the entire Instance. One of our DBA said with SQL 2012 Always On, you can fail over Only Databases. I thought you have to fail the whole instance, I might be wrong. Please help to clarify that.

Thank you.



quote:
Originally posted by tkizer

You can use Availability Groups to failover databases. What edition of SQL Server do you have?

For instance-level, it's Failover clustering.

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/

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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2015-03-11 : 14:17:48
Your DBA is correct that Availability Groups (don't call it AlwaysOn as that's a broad term that includes AGs and Failover instances) can failover the databases. It's a new technology and is done at the group level and NOT the instance level.

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/
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