Speaker
Luca dell'Agnello
(INFN-CNAF)
Description
Performance, reliability and scalability in data access are key issues when
considered in the context of HEP data processing and analysis applications.
The importance of these topics is even larger when considering the quantity of data
and the request load that a LHC data centers has to support.
In this paper we give the results and the technical details of a large scale
validation, performance and comparison tests performed at CNAF.
The storage management solutions CASTOR, gpfs, xrootd and dcache have been tested on
the CNAF production environment.
Our storage solution is based on Fibre Channel systems organized in a Storage Area
Network where disk servers are interconnected to the farm via gigabit LAN: for these
tests 24 disk servers (for a total of 220 TB of disk space) and about 260 worker
nodes have been used.
The test aim was to evaluate both the sequential and random (reading and writing)
access to the data in order to verify efficiency, availability and robustness of the
different storage solutions.
Authors
Alessandro Italiano
(INFN-CNAF)
Andrea Chierici
(INFN-CNAF)
Angelo Carbone
(INFN-CNAF)
Armando Fella
(INFN-CNAF)
Cristina Vistoli
(INFN-CNAF)
Davide Salomoni
(INFN-CNAF)
Dejan Vitlacil
(INFN-CNAF)
Donato Degirolamo
(INFN-CNAF)
Fabrizio Furano
(INFN-PADOVA)
Felice Rosso
(INFN-CNAF)
Giacinto Donvito
(INFN-BARI)
Giuseppe Lo Re
(INFN-CNAF)
Luca dell'Agnello
(INFN-CNAF)
Marco Bencivenni
(INFN-CNAF)
Massimo Donatelli
(INFN-CNAF)
Pier Paolo Ricci
(INFN-CNAF)
Riccardo Veraldi
(INFN-CNAF)
Stefano Zani
(INFN-CNAF)
Vladimir Sapunenko
(INFN-CNAF)
