Distributed Archive System for the Cherenkov Telescope Array

Cherenkov Telescope Array - the CTA Community

The Cherenkov Telescope Array (CTA) is the worldwide project for the future of Very High Energy gamma-ray astronomy with Cherenkov Telescopes. For the first time for these kind of instruments, CTA will be operated as an open observatory. The CTA data and their scientific products need to be preserved in a dedicated archive guaranteed to provide open and widespread access to heterogeneous scientific communities. One of the major technological challenge is related to the data-handling and archiving of a huge amount of data coming from instruments and subsystems as well as final science products generated by the observatory facility.


This video presents a first prototype of the CTA Archive using technologies developed within the Horizon2020 funded INDIGO-DataCloud project. In particular the team focused on employing OneData solutions for developing a distributed system deployed as a federation of different storage entities. OneData virtualizes storage systems coming from federated resource-providers distributed globally. The most significant features include metadata synchronization and on-demand file transfer. The distributed architecture of the CTA archive will allow to lower costs with respect to a single huge data centre including easy manageability and maintenance. The distributed approach also takes care of redundancy policy since involved databases of metadata are distributed together with the storage sites. Finally, this solution is fault tolerant and risk-management free since it has no single point of failure and can easily solve any disaster recovery event thanks to the redundancy of the distributed approach.

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INDIGO Service used

OneData - Global Data Access