Establishing applicability of SSDs to LHC Tier-2 hardware configuration

Skipsey, S. C., Bhimji, W. and Kenyon, M. (2011) Establishing applicability of SSDs to LHC Tier-2 hardware configuration. Journal of Physics: Conference Series, 331(5), 052019. (doi: 10.1088/1742-6596/331/5/052019)

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Solid State Disk technologies are increasingly replacing high-speed hard disks as the storage technology in high-random-I/O environments. There are several potentially I/O bound services within the typical LHC Tier-2 - in the back-end, with the trend towards many-core architectures continuing, worker nodes running many single-threaded jobs and storage nodes delivering many simultaneous files can both exhibit I/O limited efficiency. We estimate the effectiveness of affordable SSDs in the context of worker nodes, on a large Tier-2 production setup using both low level tools and real LHC I/O intensive data analysis jobs comparing and contrasting with high performance spinning disk based solutions. We consider the applicability of each solution in the context of its price/performance metrics, with an eye on the pragmatic issues facing Tier-2 provision and upgrades.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Skipsey, Dr Samuel and Kenyon, Dr Michael
Authors: Skipsey, S. C., Bhimji, W., and Kenyon, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics: Conference Series
Publisher:IOP Publishing
ISSN (Online):1742-6596
Copyright Holders:Copyright © 2011 The Authors
First Published:First published in Journal of Physics: Conference Series 331(5):052019
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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