Mar 21 – 27, 2009
Europe/Prague timezone

dCache Storage Cluster at BNL

Mar 24, 2009, 8:00 AM


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
Board: Tuesday 075
poster Hardware and Computing Fabrics Poster session


Robert Petkus (Brookhaven National Laboratory)


Over the last (2) years, the USATLAS Computing Facility at BNL has managed a highly performant, reliable, and cost effective dCache storage cluster using SunFire x4500/4540 (Thumper/Thor) storage servers. The design of a discreet storage cluster signaled a departure from a model where storage resides locally on a disk-heavy compute farm. The consequent alteration of data flow mandated a dramatic re-construction of the network fabric. This work will cover all components of our dCache storage cluster (from door to pool) including OS/ZFS file-system configuration, 10GE network tuning, monitoring, and environmentals. Performance metrics will be surveyed within the context of our Solaris 10 production system as well as those rendered during evaluations of OpenSolaris and Linux. Failure modes, bottlenecks, and deficiencies will be examined. Lastly, we discuss competing architectures under evaluation, scaling limits in our current model, and future technologies that warrant close surveillance.
Presentation type (oral | poster) Oral

Primary author

Robert Petkus (Brookhaven National Laboratory)


Dr Jason Smith (Brookhaven National Laboratory) Mr John McCarthy (Brookhaven National Laboratory) Ms Mizuki Karasawa (Brookhaven National Laboratory)

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