Reception, processing and analysis of remote sensing data require large computing capacities; the storage of Earth observation data calls for very large archiving systems. In order to meet these challenges, some 400 servers – 120 of which being virtual machines - are in use at the Earth Observation Center (EOC) sites in Oberpfaffenhofen, Neustrelitz, Berlin-Adlershof, and Bremen airport, as well as at the EOC receiving stations in Inuvik (Canada), O’Higgins (Antarctica) und Kiruna (Sweden). Another 400 servers, with 120 as virtual machines, which are used in development and testing environments are complemented by about 500 desktop computers. In total all EOC disk-based storage systems have a capacity of about 2 petabytes. Large tape-robot systems in Oberpfaffenhofen und Neustrelitz, ensuring the long-term data preservation of the EOC Earth observation data, are currently being expanded to provide storage capacity of approximately 100 petabyte in the near future.
The local area network (LAN) infrastructure comprises about 80 switches with approximately 2,800 LAN ports in more than 100 different (V)LANs. All DLR/EOC sites and receiving stations are connected by the central DLR-wide area network (WAN) which also provides Internet access. In addition to being protected by the DLR firewall the network systems are safeguarded by separate firewalls at each individual site.
Servers, storage and archiving systems are being operated by EOC staff. The network is partially run by EOC staff, partially by an external service provider. Parts of the network subsystems used by the European Space Agency (ESA) are operated directly by ESA.
Accordingly, the responsibilities for the IT Engineering team include:
The IT Engineering Team also includes the EOC IT manager and IT security administrator. Specifications and guidelines relating to IT services are coordinated among the EOC institutes, DLR’s central IT management department and the external IT service provider.