Database mirroring requirements
Microsoft SQL Server
BlackBerry UEMsupports database mirroring using one of the following:
SQL ServerNative Client
SQL Server2012 Native Client must be installed on each computer that hosts a
BlackBerry UEMinstance. The
BlackBerry UEMsetup application installs the
SQL Server2012 Native Client.
Microsoft SQL Serverthat hosts the mirror database must be the same version and edition as the
Microsoft SQL Serverthat hosts the principal database.
Make sure that the active copy of the mirror database is always in the local datacenter.
Configure database mirroring using high-safety mode with automatic failover.
A witness server is required for automatic failover. The witness must be a different server than the principal server and the mirror server.
For more information, see Database Mirroring Witness – SQL Server 2012 or Database Mirroring Witness – SQL Server 2014.