Product data

300 IBM Systems Director Management Console: Introduction and Overview
12.1 Systems Director Management Console High
Availability versus redundant setup
Users familiar with the redundant HMC setup in their Power Systems
environment can use the same setup in SDMC, as multiple SDMCs can connect
to and actively manage a single managed server.
Users can also implement SDMC High Availability, which provides active/passive
failover capability, with one active SDMC and one passive SDMC on standby to
take over in case of failure. Figure 12-1 shows both options for SDMC High
Availability and redundancy.
Figure 12-1 Redundant versus active/passive SDMC High Availability
In addition to providing the management capabilities currently in the HMC for the
managed Power System servers, the SDMC also can manage the operating
systems of the servers themselves by connecting to the Common Agent
Services (CAS) agent on the managed systems through an agent manager.
However, the CAS agent is limited to a single connection to an agent manager
and is not capable of a redundant connection. Therefore, the SDMC High
Availability feature is provided to eliminate this single point of failure for users
that require high availability for this functionality.
The choice between a redundant setup versus an active/passive High Availability
implementation depends on your planned usage of the SDMC:
򐂰 In an environment where the SDMC is used for HMC-like management
functionality, the redundant setup provides the most availability and is the
easiest to set up and administrate. Both SDMCs are active and can continue
to provide functions for the managed systems should one of them fail. The
setup of a redundant SDMC environment only involves adding the managed
system to both SDMCs.
Active
Active
P6/P7
SDMC
Passive
SDMC
Active
Redundant SDMC Active/Passive HA SDMC
P6/P7
SDMC
SDMC