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 ...