CMS Experiment DISUN: Data Intensive Science University Network Online System CERN Computer Center FNAL Korea Russia UK UCSB 0.2 - 1.5 GB/s ~10 Gb/s 10 Gb/s ~10 Gb/s Tier 0 Tier 1 Tier 3 Tier 2 Physics caches PCs UCR UFl UCSD Caltech  10s of Petabytes/yr by ~2008  1000 Petabytes in < 10 yrs.
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