Lync 2013 to Skype For Business 2015 in-place upgrade

Lync 2013 to Skype For Business 2015 in-place upgrade

There are two options for In-Place upgrade:

Migrate-users mode (No user downtime): Basically, this option is only available if organization has more than one Lync Server 2013 pool

 (Don’t consider paired/secondary/backup pool)

Offline mode (Downtime require): You can consider this option if the organization has only single pool or two pools in backup/paired pool configuration. 

·         No in-place upgrade with pool failover option

Don’t use failover cmdlet to failover the primary pool to backup pool and start in-place upgrade in primary pool. This method is not supported.

·         Don’t start services in mixed mode while upgrading.

·         Don’t unpair the pools before completing upgrade process in paired pool environment.

·         Ensure minimal downtime when the pools are paired with different versions.

Requirements

Before the servers can be upgraded to Skype for Business 2015 a number of requirements need to be met, depending of the underlying Operating System:

• Microsoft Lync Server 2013 CU5 (February 2015 update) or above
• PowerShell RTM version (6.2.9200.0) or later
• SQL Exp 2012 SP1 (Lync Server 2013 RTM installation package comes with SQL Express 2012 RTM) and SQL Express 2008 in lync 2010, and skype for business SQl express 2014
• Kb2533623 Windows Server 2008 R2
• Kb2858668 Windows Server 2012
• KB2982006 Windows Server 2012 R2

Take a separate server with no Lync binaries in it. Install SKB administrative tools.

Open the topology builder and upgrade the server and publish the topology.

When the Skype for Business Topology is successfully published the individual servers can be upgraded

Stop-CsWindowsService

Upgrade the SQl express to 2012 SP1 or later

SQLEXPR_x64_ENU.exe /ACTION=Patch /allinstances

(By default Lync 2013 setup installed SQL express 2012 RTM (11.00.2100.60). Skype for Business installs SQL Express 2014 during the setup process.)

On the server which is to be upgraded

Stop-CsWindowsService

Disable-CsComputer –Scorch

This command the entire server is disabled and all Lync related group membership is removed.

Start the Skype for Business 2015 setup application (D:\Setup\Amd64\Setup.exe) after the installation

Start-CsPool PoolFQDN

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Do the same steps for edge server, i.e. upgrade from the topology builder, then start the installation after the installation for any chance if the replication is broken then use Export-CsConfiguration from the FE and

Import-CsConfiguration