Motorola CPX8000 User Manual
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System Architecture
1
I/O Configurations
The CPX8216 contains two independent 8-slot CompactPCI buses. One
slot in each bus is dedicated to a system processor, and another is needed
for the HSC. This leaves six slots on each bus to support I/O devices or
nonsystem processors.
slot in each bus is dedicated to a system processor, and another is needed
for the HSC. This leaves six slots on each bus to support I/O devices or
nonsystem processors.
One possible configuration is to use the CPX8216 as a high I/O
CompactPCI system with redundant CPUs. With this configuration, it is
possible to run twelve independent I/O modules within a CPX8216
system. Applications requiring dense processing power could use all
twelve I/O slots to support nonsystem processors.
CompactPCI system with redundant CPUs. With this configuration, it is
possible to run twelve independent I/O modules within a CPX8216
system. Applications requiring dense processing power could use all
twelve I/O slots to support nonsystem processors.
Such a system would be protected against a CPU or HSC fault, but it would
be vulnerable to data losses if any of the I/O modules or nonsystem
processor modules were to fail. In systems handling critical data, it is
possible to implement a 2N or an N+1 I/O redundancy strategy that allows
the level of service to be continued in the event that a module fails.
be vulnerable to data losses if any of the I/O modules or nonsystem
processor modules were to fail. In systems handling critical data, it is
possible to implement a 2N or an N+1 I/O redundancy strategy that allows
the level of service to be continued in the event that a module fails.
In the case of a 2N-redundant system, each I/O module or nonsystem
processor module is matched with an identical module on the other bus.
The paired modules can be configured in an active/passive arrangement or
a load-sharing arrangement in which each carries half of the load of a
single module. In an N+1 arrangement, multiple modules are backed up by
a single spare. For example, a single passive nonsystem processor module
can be used to back up five others.
processor module is matched with an identical module on the other bus.
The paired modules can be configured in an active/passive arrangement or
a load-sharing arrangement in which each carries half of the load of a
single module. In an N+1 arrangement, multiple modules are backed up by
a single spare. For example, a single passive nonsystem processor module
can be used to back up five others.
Peripherals
Power/Fan Modules
The CPX8216 system requires a minimum of two power/fan sled modules
and a fan-only sled module to provide adequate power and cooling for a
fully loaded, nonredundant system. The system can contain a third power
supply/fan sled as part of an N+1 strategy, meaning that the system can
continue providing service if one of the modules fails. These modules are
hot swappable and available for DC and AC environments.
and a fan-only sled module to provide adequate power and cooling for a
fully loaded, nonredundant system. The system can contain a third power
supply/fan sled as part of an N+1 strategy, meaning that the system can
continue providing service if one of the modules fails. These modules are
hot swappable and available for DC and AC environments.