March 21, 2014 at 3:22 pm
Hi everyone, I'm reading up on Always on and I am confused what is the difference between AlwaysOn Availability Groups and AlwaysOn Failover Cluster Instances. Can you shed some light on this? Thanks.
March 21, 2014 at 4:07 pm
Availability Groups are a mechanism for setting up the ability to fail a database or a set of databases from one server to another. With this setup, there is nothing shared between the servers. They each have their own disks, their own CPU, etc. A cluster is at the server level. In a cluster, there is a shared disk between the two (or more) machines that each has to have access to in order for the service to work. You can get a lot more detail if you go and read the entries in the Books Online at MSDN.
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March 21, 2014 at 5:56 pm
shahgols (3/21/2014)
Hi everyone, I'm reading up on Always on and I am confused what is the difference between AlwaysOn Availability Groups and AlwaysOn Failover Cluster Instances. Can you shed some light on this? Thanks.
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March 24, 2014 at 10:31 am
Thank you!
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