Title :
An overview of a large-scale data migration
Author :
Lübeck, Magnus ; Geppert, D. ; Nienartowicz, Krzysztof
Abstract :
We present an overview of the migration of the data collected by the COMPASS experiment at CERN. In less than three months, almost 300 TB will be migrated at a sustained data rate approaching 100 MB/s, using a distributed system with multiple nodes and data servers. This project, which is being carried out by the Database Group of CERN´s IT Division and is expected to be completed by early 2003, involves both a physical media migration, from StorageTek 9940A to StorageTek 9940B tapes, and a data format conversion, from an object database management system to a hybrid persistency mechanism based on flat files referenced in a relational database management system.
Keywords :
electronic data interchange; high energy physics instrumentation computing; relational databases; CERN; COMPASS experiment; StorageTek 9940A tapes; StorageTek 9940B tapes; data format conversion; distributed system; flat files; hybrid persistency mechanism; large-scale data migration; multiple data servers; multiple nodes; object database management system; physical media migration; relational database management system; Database systems; Elementary particles; Energy measurement; Information retrieval; Large-scale systems; Memory; Navigation; Particle beams; Project management; Relational databases;
Conference_Titel :
Mass Storage Systems and Technologies, 2003. (MSST 2003). Proceedings. 20th IEEE/11th NASA Goddard Conference on
Print_ISBN :
0-7695-1914-8
DOI :
10.1109/MASS.2003.1194835
