The best replacement for fiber channel is iscsi.

The best alternatives to fiber channel are rated as following:
★★★★★  iscsi
★★  fibre channel
★★  scsi
★  fcoe
★  infiniband
★  10gb ethernet
  ficon

Your alternative for fiber channel is not listed? Suggest!
Speaking about fiber channel, one probably shouldn't forget about openfiler.

Other search terms related to fiber channel and their ratings are:
★★★★★ openfiler
You have in mind a companion for fiber channel and it is not yet here? Propose!



Google Trends

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fiber channel
iscsi
fibre channel