6.1.2 IBM VM Recovery Manager HA components KSYS controller VM agent GUI server Hardware Management Consoles  Virtual I/O Server This section provides a brief overview of VMR HA and introduces the solution’s main  components and capabilities. This is the core component of the solution. KSYS acts as an overall orchestrator of the entire  solution. It monitors the whole infrastructure, reacts to failures when they occur, and  communicates and interact with HMCs, Power Systems, and VIOSs. KSYS runs on an AIX  VM that is on an Power Systems server that is  not  part of the IBM VM Recovery Manager  scope to ensure that it remains operational if the entire managed infrastructure fails.  This is an agent that communicates with KSYS, and monitors the health status of the VMs  and (optionally) applications running in the VMs. This is the GUI to the KSYS that represents a convenient alternative to the KSYS CLI. It can  be used to manage both HA and DR deployments. These are the HMCs that manage the Power Systems servers. All Power Systems servers  that are included in a VMR HA solution must be managed by HMCs. All HMCs are registered  with KSYS and act as an intermediary that provides KSYS access to Power Systems servers,  VIOSs, and that are VMs included in the scope of VMR HA solution. VIOSs are used to deploy VMs on Power Systems servers and provide KSYS with all the  required configuration details for all VMs. VIOSs also run a special process that is named  Host Monitor (HM) that monitors the heartbeats that are sent by VMs, and intermediates the  communications with KSYS. VMR HA has the following key features: For more information and implementation guidelines for VMR HA, see  Implementing IBM VM  Recovery Manager for IBM Power Systems , SG24-8426. Chapter 6. Disaster recovery and high availability  153 GLYPH<SM590000> VM moves by using LPM for planned outages. GLYPH<SM590000> Restart-based VM moves for unplanned outages. GLYPH<SM590000> Host grouping for Power Systems servers with similar network and storage connectivity. GLYPH<SM590000> Definition of colocation and anti-collocation policies. GLYPH<SM590000> Definition of VM relocation policies. GLYPH<SM590000> Host, VM, and application-level monitoring. GLYPH<SM590000> Cross-VM application dependency. GLYPH<SM590000> Enhanced VIOS monitoring. GLYPH<SM590000> GUI and CLI-based management.