Hi Nikita Panov,
We support the following two migrate method:
1.Create a separate failover cluster running Windows Server 2008 R2 and then migrate to that cluster.
2.Perform an in-place migration involving only two servers.
Because there are a variety of methods that you can use to perform the overall process of migration, please tell us which method migrate method you are using,you can first refer the following related KB to confirm your migrate scenario is the supported scenario:
Migrating Clustered Services and Applications to Windows Server 2008 R2 Step-by-Step Guide
https://technet.microsoft.com/en-us/library/ff182314(v=ws.10).aspx
More related information:
Understanding the Process of Migrating to a Cluster Running Windows Server 2008 R2
https://technet.microsoft.com/en-us/library/cc731812.aspx
Im glad to be of help to you!
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Edited by
Alex LvMicrosoft contingent staff, Moderator
Saturday, February 28, 2015 1:57 AM