Performance Metrics

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Parallelism

• P_f : number of storage nodes participating concurrently in supplying the data for a document
• range from 1 to D
• reliablity and fault-tolerant

  Concurrency

• C_f : number of active clients that can access the same document simutanously
• C_f  =  min_n(B_nP_f / R_f)
• C_f,max  =  I_bw / R_f