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PSH automated run-time diagnosis capability that takes faulty components
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offline.
For more information about using RAS features, refer to the Sun Fire T2000 Server
Administration Guide.
2.1.4.1
Hot-Pluggable and Hot-Swappable Components
The server hardware supports hot-plugging or hot-swapping of the chassis-mounted
hard drives, fans, power supplies, and the rear blower. Using the proper software
commands, you can install or remove these components while the server is running.
Hot-plug and hot-swap technologies significantly increase the server's serviceability
and availability by providing the ability to replace hard drives, fan units, rear
blower, and power supplies without service disruption.
2.1.4.2
Power Supply Redundancy
The server features two hot-swappable power supplies, which enable the system
to continue operating should a power supply or power sources fail.
The server also has a single hot-swappable blower unit that works in conjunction
with the power supply fans to provide cooling for the internal hard drives. If the
blower unit fails, the two power supply fan units provide enough cooling for the
hard drive bay to keep the server running.
2.1.4.3
Fan Redundancy
The server features three hot-swappable system fans. Multiple fans enable the server
to continue operating with adequate cooling in the event that one of the fans fails.
2.1.4.4
Environmental Monitoring
The server features an environmental monitoring subsystem designed to protect the
server and its components against:
Extreme temperatures
■
Lack of adequate airflow through the system
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Power supply failures
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Hardware faults
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Temperature sensors located throughout the server monitor the ambient temperature
of the server and internal components. The software and hardware ensure that the
temperatures within the enclosure do not exceed predetermined safe operating
ranges. If the temperature observed by a sensor falls below a low-temperature
Chapter 2 Server Overview
2-7
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