
RX300 S4 Operating Manual 15
Preface Features
Power supply
In its basic configuration, the server has a hot-pluggable power supply unit that
adjusts automatically to any power voltage in the range from 100 V to 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 “CSS components” on
page 75).
Cooling
The server is cooled by either one or two fan units (redundant). One fan unit with
three CPU fans and one system fan is installed as standard. If two fan units are
installed, each of them forms a redundant unit.
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 “Replacing a hot-plug fan” on page 89).
Each processor has a heat sink. Further cooling for the installed processors is
provided by the CPU fans (three or six) in the fan units.
High level of availability and data security
When memory data is accessed, 1-bit errors in the main memory are identified
and automatically corrected with the ECC (Error Correcting Code) method. The
patented memory scrubbing function regularly starts up the EDC mechanism
and thus ensures continuous data integrity.
The memory modules used support SDDC technology (Chipkill™), which also
increases the effectiveness of the monitoring and correction of memory errors.
Support is likewise provided for hot-spare memory technology, in which a
memory bank is used like a replacement bank. If a memory module fails, the
bank with the defective memory is automatically deactivated and the
replacement bank is activated (assuming it has been configured correspond-
ingly in the BIOS; see BIOS Setup ). The deactivated memory bank is no longer
used and the faulty memory module can be replaced at the next opportunity. In
order to be able to use the hot-spare memory function, all occupied memory
banks must have an identical memory configuration.
ASR&R (Automatic Server Reconfiguration and Restart) restarts the system in
case of an error and automatically ìhidesî the defective system components.