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arXiv · 1102.3114

Establishing Applicability of SSDs to LHC Tier-2 Hardware Configuration

Samuel C Skipsey·Wahid Bhimji·Mike Kenyon
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Abstract

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

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Samuel C Skipsey, Wahid Bhimji, Mike Kenyon. 2011-02-15. Establishing Applicability of SSDs to LHC Tier-2 Hardware Configuration. https://doi.org/10.1088/1742-6596/331/5/052019

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