Reliability and Recoverability
Critical Reliability
Critical reliability systems are fully operational over 99 percent of the time, on average. No other switch vendor offers this level of system redundancy.
A critical reliability DEFINITY ECS includes:
■Two control carriers
■Two
■Two connections between port networks or between Expansion Port Networks and the Center Stage Switch
■Two switch node carriers in
Figure 1-10 shows two control carriers and duplicate fiber-optic cables that con- nect each port network in a critically reliable, directly-connected system.
1) | Processor Port Network | 3) | Control Carrier |
2) | Expansion Port Network | 4) | Duplicate Control Carrier |
|
| 5) | Fiber Optic Cables |
Figure 1-10. Critical Reliability, Directly Connected System
Issue 5 January 1998 |
