Effective data transfer rate

Effective data rate is less than nominal data rate

Not just data is transferred, but also packaging and control information

• ESCON

  • Nominal data rate 20 MB/sec
  • Effective data rate ~ 17 MB/sec

• FICON, per fiber

  • Nominal data rate 100 MB/sec, 200 MB/sec express
  • Effective data rate ~ 75 MB/sec, 150 MB/sec express

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