Configuring Highly Available Subsystems
A computer system (from an RAS perspective) can be viewed as consisting of multiple subsystems in series, which means that if a subsystem fails, the whole system fails. For example, if the power supply subsystem fails, the whole system will fail. However, computer systems based on RAS principles have redundancy built into each subsystem. For example, a RAS computer system with N+1 redundancy will have more than one power supply module in the subsystem (see Figure 1-4); therefore, the failure of one power supply module will not result in total system failure.
Figure 1-4. Server Subsystems with N+1 Redundancy
Note
The Sun Enterprise Server 10000 SSP software includes a component blacklisting option that enables ...
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