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| Paper: |
The Euclid Science Ground Segment Distributed Infrastructure: System Integration and Challenges |
| Volume: |
521, Astronomical Data Analysis Software and Systems XXVI |
| Page: |
612 |
| Authors: |
Frailis, M.; Belikov, A.; Benson, K.; Bonchi, A.; Dabin, C.; Ealet, A.; Fumana, M.; Grenet, C.; Holliman, M.; Maggio, G.; Maino, D.; McCracken, H. J.; Melchior, M.; Piemonte, A.; Polenta, G.; Poncet, M.; Scala, P. L.; Serrano, S.; Williams, O. R. |
| Abstract: |
The Science Ground Segment (SGS) of the Euclid mission provides
distributed and redundant data storage and processing, federating
nine Science Data Centres (SDCs) and a Science Operations Centre.
The SGS reference architecture is based on loosely coupled systems
and services, broadly organized into a common infrastructure of
transverse software components and the scientific data Processing
Functions. The SGS common infrastructure includes: 1) the Euclid
Archive System (EAS), a central metadata repository which
inventories, indexes and localizes the huge amount of distributed
data; 2) a Distributed Storage System of EAS, providing a unified
view of the SDCs storage systems and supporting several transfer
protocols; 3) an Infrastructure Abstraction Layer, isolating the
scientific data processing software from the underlying IT
infrastructure and providing a common, lightweight workflow
management system; 4) a Common Orchestration System, performing a
balanced distribution of data and processing among the SDCs.
Virtualization is another key element of the SGS infrastructure. We
present the status of the Euclid SGS software infrastructure, the
prototypes developed and the continuous system integration and
testing performed through the Euclid “SGS Challenges”. |
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