12
Operating Manual
CX420
S1
Functional overview
Power supply
The system has two bays for hot-swap power supply units. In the base
configuration, it is fitted with one power supply unit. A second hot-plug power
supply unit can be added to ensure a redundant power supply. If one power
supply unit is defective, the other then guarantees unimpaired operation. Each
hot-plug power supply unit can be replaced during operation (see the
"PRIMERGY CX420 S1 Upgrade and Maintenance Manual").
The Dual Node Cluster Server uses a hot-plug PSU, which automatically sets
itself to a mains voltage in the range of 200 - 240 V (High Line) or 100 - 240 V
(Wide Range); depends on which PSU option is used.
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.
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.