Claudia Ciocca (INFN)
In the framework of WLCG, Tier1s need to manage large manage volumes of data ranging in the PB scale. Moreover they need to be able to transfer data, from CERN and with the other centres (both Tier1s and Tier2s) with a sustained throughput of the order of hundreds of MB/s over the WAN offering at the same time a fast and reliable access also to the computing farm. In order to cope with these challenging requirements, at INFN Tier1 we have adopted a storage model based on StoRM/GPFS/TSM for the D1T0 and D1T1 Storage Classes and on CASTOR for the D0T1. In this paper we present the results of the commissioning tests of this system for the ATLAS experiment reproducing the real production case with a full matrix transfer from the Tier0 and with all the other involved centers. Noticeably also the new approach of direct file access from farm to data is covered showing showing positive results. GPFS/StoRM has also been sucessfully deployed, configured and commissioned as storage solution for an ATLAS INFN Tier2, specifically the one of Milan; the results are shown and discussed in this paper together with the ones obtained for the Tier1.
|Presentation type (oral | poster)||oral|