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  2. BlackBerry UEM 12.18
  3. Planning and Architecture
  4. BlackBerry UEM and BEMS Planning Guide
  5. Planning high availability for a BlackBerry UEM domain
  6. Configuring database high availability using database mirroring
  7. Database mirroring requirements

Database mirroring requirements

Item
Requirement
Microsoft SQL Server
BlackBerry UEM
 supports database mirroring using one of the following:
  • Microsoft SQL Server
     2012
  • Microsoft SQL Server
     2014
SQL Server
 Native Client
The 
SQL Server
 2012 Native Client must be installed on each computer that hosts a 
BlackBerry UEM
 instance. The 
BlackBerry UEM
 setup application installs the 
SQL Server
 2012 Native Client.
Version parity
The 
Microsoft SQL Server
 that hosts the mirror database must be the same version and edition as the 
Microsoft SQL Server
 that hosts the principal database.
Database location
Make sure that the active copy of the mirror database is always in the local datacenter. 
Operating mode
Configure database mirroring using high-safety mode with automatic failover.
Witness
A witness server is required for automatic failover. The witness must be a different server than the principal server and the mirror server.