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STORM, AN SRM IMPLEMENTATION FOR LHC ANALYSIS FARMS

By R. Murri M.Mazzucato L.Magnoni A.Ghiselli Donno S. Cozzini E. Corso, H. Stockinger P. P. Ricci and et al. A. Terpin

Abstract

In production grids, high performance disk storage solutions using parallel file systems are becoming increasingly important to provide reliability and high speed I/O operations needed by HEP analysis farms. Today, Storage Area Network solutions are commonly deployed at LHC center and and parallel file systems such as GPFS and Lustre allow for reliable, high-speed native POSIX I/O operations in parallel fashion. In this article we describe the status of the StoRM project, an implementation of the Storage Resource Manager (SRM) standard interface version 2.1.1 for disk based storage solutions. StoRM is designed to work over native parallel filesystems, provides for space reservation capabilities and uses native high performing POSIX I/O calls for file access. StoRM takes advantage of ACL support provided by the underlying filesystem to implements the security model. StoRM is also designed to cater for the interests of Economics and Finace as represented by the EGRID Project, given that security is an important driving requirement. We report on the tests performed on a dedicated test bed to prove basic functionality and scalability of the system together with GPFS performance on write and read operation from multiple nodes

Year: 2010
OAI identifier: oai:CiteSeerX.psu:10.1.1.178.1224
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