SEP11 RU6 MP3 Server (11.0.6300.803) on Windows Server 2008 R2 SP1
I know that Service Pack 1 for Windows Server 2008 R2 wasn't officially supported until the release 11 RU7.
However I'm wondering if there are any real known issues when applying Service Pack 1 to a 2008 R2 system running RU6 MP3 Server (11.0.6300.803).
The reason is lack of knowledge about the product and time to learn/investigate. My customer has rights to upgrade to 11 RU7 or even to 12.1.3 (RU3) but my experience says that upgrading rarely is as straight forward as migration guides says.
Can anyone share some upgrade experiences and thought on my options?