FUJITSU T2000 - Manual (Page 26)

10 SPARC Enterprise T2000 Server Overview Guide • April 2007
Fan Redundancy
The SPARC Enterprise T2000 server features three hot-swappable system fans. The
fans enable the system to continue operating with adequate cooling in the event that
one of the fans fails.
Environmental Monitoring
The SPARC Enterprise T2000 server features an environmental monitoring
subsystem protects the server and its components against:
■ Extreme temperatures
■ Lack of adequate airflow through the system
■ Power supply failures
■ Hardware faults
Temperature sensors are located throughout the system to monitor the ambient
temperature of the system and internal components. The software and hardware
ensure that the temperatures within the enclosure do not exceed predetermined safe
operation ranges. If the temperature observed by a sensor falls below a low-
temperature threshold or rises above a high-temperature threshold, the monitoring
subsystem software lights the amber Service Required LEDs on the front and back
panel. If the temperature condition persists and reaches a critical threshold, the
system initiates a graceful system shutdown. In the event of a failure of the system
controller, backup sensors protect the system from serious damage, by initiating a
forced hardware shutdown.
All error and warning messages are logged in the ALOM CMT event log and are
optionally sent to the system controller (SC) system console. Service Required LEDs
remain lit after an automatic system shutdown to aid in problem diagnosis.
The power subsystem is monitored in a similar fashion by monitoring power
supplies and reporting any fault in the front and rear panel LEDs.
If a power supply problem is detected, an error message is logged in the ALOM
CMT event log and optionally sent to the SC system console. Additionally, LEDs
located on each power supply light to indicate failures. The system Service Required
LED lights to indicate a system fault.
Support for RAID Storage Configurations
You can set up a hardware RAID 1 (mirroring) and hardware RAID 0 (striping)
configurations for any pair of internal hard drives, providing a high-performance
solution for hard drive mirroring.