TECHNICAL SUPPORT DEPT.

A short historical preview
ENB Ltd has a long tradition of employing the latest technology in hardware & software. Historically it is one of the first Greek Companies to employ Computing devices for hydraulic calculations back in the late 1970s- early 1980s after transitioning from Texas Instruments programmable Calculators to a pair of “Compustar/Superbrain” Computers that ran under CP/M and using twin (!) Z-80 Processors. At today’s prices they had a purchasing cost of the most expensive small business servers available today. In the mid 1980s the “PC-era” began by purchasing the first 8086 PC and continued with other PCs, mainly OLIVETTI with 8088, 80286, 80386 and 80486 processors. In the mid 1990s the Pentium PCs began to replace the older PCs and are updated and used up to today. One exception to which it must be referred to is the introduction of a SUN-Server using the powerful UltraSparc Processor at 64bit and the SOLARIS operating system; it is mainly used for the Arc/Info-package but is clearly a sign of being able to use different (though compatible) systems in order to ensure optimum performance and reliability.

Hardware - Today

The PCs are all Pentiums (with some Cyrix & AMD) with continuous upgrades and optimized for the task that they are dedicated to. Two main Dual Xeon Servers are installed running under Windows 2003 Server. Additionally three RAID protected Pentium IV systems run the GIS application including the ArcGIS Server and Oracle/ArcSDE services. One PC is dedicated to developing knowhow using LAMP configuration (Linux Apache MySQL PHP) and JAVA.

All computers are networked via hubs and switches at 100 Mbit/s. They are organized in two physically separate UTP-networks (cat. 5) which are interconnected. That makes a total of over 20 workstations which are interconnected. Additionally the SUN server is accessed via an NFS-host program. All plotters, printers, scanners and backup devices are on the network and can be accessed by various computers independently.

Useful & interesting web links here

You can email us directly here: gis@enb.gr