I am curious if Lync Server 2010 databases be hosted on a shared SQL server (or cluster)? i.e. SQL server is hosting other third party application databases or even OCS 2007 R2 databases? This TechNet article seems to indicate it is a supported scenario: http://technet.microsoft.com/en-us/library/gg398102.aspx
I understand the best practice would be to provide Lync a named instance exclusively for its databases, but are there any performance guidelines or sizing considerations to account for when collocating the Lync SQL instance on a shared SQL server?