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  1. BlackBerry Docs
  2. BlackBerry UEM 12.12
  3. Planning and Architecture
  4. BlackBerry UEM and BEMS Planning Guide
  5. Planning high availability for a BlackBerry UEM domain
  6. Load-balancing data for BlackBerry 10 devices without BSCP
  7. How BlackBerry UEM evaluates the health of components

How
BlackBerry UEM
 evaluates the health of components

The following
BlackBerry UEM
 components have health scores that are used to determine whether a recovery action is required:
Components
Health monitored by
Health score factors
Action if health is below threshold
BlackBerry MDS Connection Service
 and
BlackBerry Dispatcher
 (aggregate health score)
Active
BlackBerry Affinity Manager
  • Whether the components are running
  • Whether they can connect to the active
    BlackBerry Affinity Manager
  • Whether they can connect to
    BlackBerry 10
     devices
  • Whether they can connect to the database
The
BlackBerry Affinity Manager
 moves
BlackBerry 10
 devices from the unhealthy
BlackBerry UEM
 instance to the healthy instances.
Active
BlackBerry Affinity Manager
Each standby
BlackBerry Affinity Manager
  • The status of the
    BlackBerry Affinity Manager
     (active, standby, or in election to become active)
  • Whether it can connect to the
    BlackBerry Dispatcher
  • Whether it can receive calls from the
    BlackBerry UEM Core
     and each standby
    BlackBerry Affinity Manager
  • Whether it can connect to the
    BlackBerry Infrastructure
  • Whether it can connect to and load configuration settings from the database
The standby instances initiate a failover and one becomes the active
BlackBerry Affinity Manager
.