Modular server design manages rail data centre

In order to meet the growing number of automated functions in the train, MEN has now expanded its range of rail services with the MH70R. It can be used as a standalone computer system, or in a networked configuration of two or more sub-units as a mobile IT infrastructure platform, it can act as the central component of the menRDC (Railway Data Centre). The menRDC is the mobile office IT computer for virtually all non-vital train applications from MEN.

menRDC relies on industry standards for hardware, software and communications and creates a neutral computer platform with an infrastructure comparable to office IT, which is independent of the application. For many applications the MH70R functions as a central server and virtualisation computer.

The heart of the MH70R is a powerful CPU card with Intel-Xeon-D processor – especially suitable for virtualisation – with up to 16 processors, 10Gbit and Gbit Ethernet interfaces, as well as conventional serial I/O like RS232 and USB 3.0. The most common wireless communication functions and some RAID memories are implemented, using modular CompactPCI Serial peripheral cards.

A Linux-based hypervisor is used to abstract the hardware from the application. Virtualisation is supported by the Intel VT-x and VT-D technology. The Trusted Platform Module (TPM), which encrypts data through cryptography, error correction code (ECC) support, board and system management control, as well as a watchdog timer, ensure reliability and security.

To ensure reliability and redundancy, the MH70R provides two PSU slots (AC or DC) that can be powered by independent power supply networks. Thus normal operation is ensured if at least one external voltage is present.

It can be combined with additional modules for memory expansion, communication with other train calculators or I/O interfaces. Other members of the menRDC family can be used, for example the MH70S data storage system and the NH30 managed Gigabit Ethernet switch.

Applications range from the communication system, to passenger information and entertainment systems, wireless access points (WAP) for internet on trains, video monitoring systems, diagnostic and maintenance systems, and electronic ticket delivery.


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