RX200 S4 Operating manual 13
Preface Features
Power supply
The basic configuration of the server includes a hot-plug power supply unit,
which automatically sets itself to a mains voltage in the range of 100 V - 127 V
or 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 83).
Cooling
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 98).
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.
Memory Mirroring is also supported (requires four, eight or twelve memory
modules). Memory Mirroring is roughly comparable to RAID level 1 for hard disk
arrays. Memory modules are protected against failure by mirroring. The basic
configuration requires four identical memory modules in two different banks.
ASR&R (Automatic Server Reconfiguration and Restart) restarts the system in
case of an error and automatically “hides” the defective system components.
The PDA (Prefailure Detection and Analysis) technology from Fujitsu Siemens
Computers 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 protection.
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