===== Fiber channel / cables maximum length =====

Cable quality OM1, OM2, OM3 and OM4 depending on speed and lenght

{{:storage:max-fc-distances1.png?650}}

Pretty simple calculation. Divide by 10. (Each byte is 10 bits after encoding.)
<code>
4G (bps) ports provides 400MB/s
...
64G (bps) ports provides 6400MB/s
</code>

OM5 is OM4 with higher Bandwidth–allow to have four wavelength in one fiber to transmit 4 signals–Existing 850nm–Additionally 880nm, 910nm, 940nm

  * Fibre Channel still using 850nm
  * No distance changes 

  * 4 Gbps OM4: 400m
  * 8 Gbps OM4/5: 190m
  * 16 Gbps OM4/5: 125m
  * 32 Gbps OM4/5: 100m
  * 64 GbpsOM4/5: 100m