Fujitsu PRIMERGY RX600 S4 Operating Manual page 12

Features Preface
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
(Error Detection Code) and thus ensures continuous data integrity.
The memory modules used support SDDC technology (Chipkill™), which
further increases the effectiveness of memory error monitoring and correction.
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 (provided it has been configured for appropriately
in the BIOS). 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.
Memory modules can be protected against failure through mirroring (memory
mirroring, requires two or four memory modules).
ASR&R (Automatic Server Reconfiguration and Restart) restarts the system in
the event of an error and automatically "hides" the defective system compo-
nents.
The PDA (Prefailure Detection and Analysis) technology from Fujitsu Siemens
Computers analyzes and monitors all components that are critical for system
reliability.
The onboard SAS controller supports the RAID levels 0, 1, 10, 5 and 50, thus
increasing system availability and reliability.
Additional reliability is provided by the hot-plug HDD modules, fans, power
supply units and expansion cards.
12 Operating manual
RX600 S4