Recently I and another Modality colleague (Tom Arbuthnot, www.lyncdup.com) had a discussion around Lync 2010 and Lync 2013 coexistence and how and when to run the CU updates on both Lync versions/platforms in accordance with Microsoft’s Best Practice guidelines.
From the conversation with Tom, and further investigation I thought it would be worth detailing the ‘do’s and dont’s for running the Lync CU updates sent from Microsoft periodically.
So at this point if you are reading this blog post I’m presuming you are in the predicament on what to do next.
The answer is simple. (it depends on where your CMS store is located)
If your CMS store is still located on Lync 2010 then run the CU update for Lync 2010 as normal. If your CMS store is on Lync 2013 run then CU updates for Lync 2013 as normal. SIMPLE RULE !! Don’t ever run the SQL update part of the CU update on the Lync version where the CMS store ISNT located.
In an example, I have a Lync 2010 environment running CU7 and a Lync 2013 environment running RTM and the CMS Store is still located on Lync 2010.
In this scenario you can update Lync 2010 with CU8 including updating the SQL backend database as per CU instruction. To update Lync 2013 you only run the CU1 update for the components only and NOT (and again NOT) the SQL database update!!
If you have moved your CMS store from Lync 2010 to Lync 2013, then updating Lync 2010 is only the components only and NOT the SQL update part. And for Lync 2013 which now homes the CMS store, run the full CU update including the SQL update part.
Hope this helps the understanding
As a side note: Please check out Tom’s Blog as it has reference to excellent Lync content. again the Link is www.lyncdup.com