Ms Windows Server Upgrading 2008 r2 to 2012 with failover cluster and SQL cluster.

Hi Teams

Need advise for OS upgrading from w2008 r2 to w2012 r2. The details as below.

- 2 physical node installed with Ms Windows 2008 R2 x64.

- attach to FC Storage for SQL Data resource cluster.

- both node configured with windows failover cluster and SQL cluster.

Kindly advise and share the procedure or step to upgrade both of the node from Windows 2008 to Windows 2012.

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