Fujitsu PRIMERGY RX200 S6 Operating Manual page 18

Preface
USB connectors
The three USB connectors on the front of the server support activities carried
out by the service technician. The maximum length of the external cable are
three meters.
Power supply
The server uses a hot-plug power supply unit, which automatically set itself to a
mains voltage in the range of 100 V - 127 V ⁄ 200 V - 240 V. As an option, the
power supply can be expanded with an extra power supply unit to create a
redundant power supply. If a power supply unit fails, the redundant configuration
assures continued operation. The defective power supply unit can be replaced
during operation (for further details see section "Hot-plug power supply units"
on page 88).
Cooling
The Cool-safe™ cooling concept with improved air flow cooling technology
(honeycomb design) ensures the highest possible performance of the
processors at work; at the same time, the system is extremely reliable thanks to
the reduced heat dissipation.
Each processor has a heat sink. Further cooling for the installed processors is
provided by six fan units (redundant). If one fan in a redundant unit fails, the
system is able to continue operating without limitations. If a fan fails, it can be
replaced while the system is running (for further details see section "Replacing
a hot-plug fan" on page 100).
High level of availability and data security
When memory data is accessed, 1-bit errors are identified in the main memory
and automatically corrected with the error correcting code (ECC) method.
ASR&R (Automatic Server Reconfiguration and Restart) restarts the system in
the event of an error and automatically "hides" the defective system
components.
The PDA (Prefailure Detection and Analysis) technology from Fujitsu analyzes
and monitors all components that are critical for system reliability.
A RAID controller supports different RAID levels and increase the availability
and data security of the system.
The hot-plug HDD modules provide additional availability.
18 Operating Manual
RX200 S6