I have Lync server 2013 Enterprise deployed next to Lync Server 2010 in a new VLAN. The first time I deployed this, I used an SQL server sql01 for the Lync 2013 databases. Later I decided to use another SQL server, lets say sql02.
All databases are succesfully installed on sql02, sql01 is completely removed from the topology and Lync Server 2013 is functioning fine. When I try cmdlet 'Test-CsDatabase -SqlServerFqdn sql01.domain.local -ConfiguredDatabases' I get
'Test-CsDatabase : Command execution failed: "sql01.domain.local" is not a known computer in the topology.' Which is what it should be.
However I still see connections on network level from my 2013 frontends to the sql01 and as soon as i take the Lync 2013 databases offline on the sql01, for example cpsdyn, I get lots of errors in my 2013 frontend eventlogging and Lync Server 2013 stops functioning.
What is happening and how can I completely decommission this old sql01?
