Tri-existence is not supported but co-existence is supported.īring up a new Skype for Business Server 2015 pool and then migrate users to this new pool. In this case you would not be able to take advantage of In-Place Upgrade and would use straight co-existence between Lync Server 2010 and Skype for Business Server 2015.
However, if your topology is primary Lync Server 2010 you can also roll back the Lync Server 2013 components to Lync Server 2010 and then upgrade directly to Skype for Business Server 2015. Lync Server 2010 + Lync Server 2013 (dual-mode)įirst, upgrade to Lync Server 2013, and then upgrade to Skype for Business Server 2015 by using the new In-Place Upgrade feature. see Plan to upgrade from Lync Server 2013 to Skype for Business Server 2015 and Upgrade to Skype for Business Server 2015 for detailed steps. To upgrade, use the Skype for Business Server Topology Builder and the new In-Place Upgrade feature on each of the servers associated with the pool. In general, whenever you are working with Skype for Business Server 2015 in any capacity you should use the Skype for Business Server 2015 tool set. If you try to use the Lync Server 2013 Management Shell to move conference directories from Lync Server 2013 to Skype for Business Server 2015 then data loss can occur. However, if you plan to manually move conference directories it is very important to use the Skype for Business Server 2015 Management Shell.
In-Place Upgrade automatically moves conference directories from Lync Server 2013 to Skype for Business Server 2015.
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