8 Operating Manual RX200 S3
Features Introduction
Accessible drive
A mounting location is provided for a slimline CD/DVD ROM drive (optional) The
accessible drive installed here cannot be replaced during operation.
USB port
The two USB ports on the front of the device support activities carried out by the
service technician. The maximum length of the external cable are three meters.
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 section “Hot-plug power
supply units” on page 67).
Cooling
Each processor has a heat sink. Further cooling for the installed processors is
provided by five 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 78).
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 or eight 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 configu-
ration 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.
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