The CMS Data Management System

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Giffels, M.^1 ; Guo, Y.^2 ; Kuznetsov, V.^3 ; Magini, N.^1 ; Wildish, T.^4

CERN, Geneve 23

CH-1211, Switzerland^1

Fermi National Accelerator Laboratory, Batavia

IL, United States^2

Cornell University, Ithaca

NY, United States^3

Princeton University, Princeton

NJ, United States^4

关键词: Aggregate views;    Data aggregation service;    Data management system;    Location systems;    Modular system;    Nosql database;    Petabytes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/4/042052/pdf
DOI  :  10.1088/1742-6596/513/4/042052

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The data management elements in CMS are scalable, modular, and designed to work together. The main components are PhEDEx, the data transfer and location system; the Data Booking Service (DBS), a metadata catalog; and the Data Aggregation Service (DAS), designed to aggregate views and provide them to users and services. Tens of thousands of samples have been cataloged and petabytes of data have been moved since the run began. The modular system has allowed the optimal use of appropriate underlying technologies. In this contribution we will discuss the use of both Oracle and NoSQL databases to implement the data management elements as well as the individual architectures chosen. We will discuss how the data management system functioned during the first run, and what improvements are planned in preparation for 2015.