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The CERN Cloud Computing Project. William Lu, Ph.D. Platform Computing. CERN/Outside Resource Ratio ~1:2 Tier0/( Tier1)/( Tier2) ~1:1:1. ~ PByte /sec. ~100-1500 MBytes /sec. Online System. Experiment. CERN Center PBs of Disk; Tape Robot. Tier 0 +1. Tier 1. 10 Gbps.
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