CERN Accelerating science

ATLAS Slides
Report number	ATL-SOFT-SLIDE-2015-106
Title	Evolution of the ATLAS Metadata Interface (AMI)
Author(s)	Odier, Jerome (Laboratoire de Physique Subatomique et de Cosmologie de Grenoble (LPSC)) ; Albrand, Solveig (Laboratoire de Physique Subatomique et de Cosmologie de Grenoble (LPSC)) ; Fulachier, Jerome (Laboratoire de Physique Subatomique et de Cosmologie de Grenoble (LPSC)) ; Lambert, Fabian (Laboratoire de Physique Subatomique et de Cosmologie de Grenoble (LPSC))
Corporate author(s)	The ATLAS collaboration
Submitted to	21st International Conference on Computing in High Energy and Nuclear Physics, Okinawa, Japan, 13 - 17 Apr 2015
Submitted by	[email protected] on 26 Mar 2015
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	AMI ; Metadata ; Databases ; Cloud computing
Abstract	The ATLAS Metadata Interface (AMI) can be considered to be a mature application because it has existed for at least 10 years. Over the years, the number of users and the number of functions provided for these users has increased. It has been necessary to adapt the hardware infrastructure in a seamless way so that the Quality of Service remains high. We will describe the evolution of the application from the initial one, using single server with a MySQL backend database, to the current state, where we use a cluster of Virtual Machines on the French Tier 1 Cloud at Lyon, an ORACLE database backend also at Lyon, with replication to CERN using ORACLE streams behind a back-up server.