The 16Gb Fibre Channel Dilemma
Most of the major vendors of FC storage use embedded Tachyon QE8 8Gb FC protocol chips from PMC Sierra in their front-end adapters. But PMC Sierra has stopped the further development of FC protocol chips because of diminishing marginal returns, see http://wikibon.org/wiki/v/FC_and_Ethernet_as_a_Single_Solution_Set .
Therefore the major storage vendors must switch the FC protocol chip source und change the firmware appropriately. I think that Emulex is in the best position as coming FC protocol chip supplier. An example from the past : 3PAR has used the Emulex "Arnold" chip in their 4-port 4Gb FC adapters.
Storage vendors like Dell Compellent which are using "normal" PCI Express FC HBAs have a clear time-to-market advantage for 16 Gb FC, they need only new target mode drivers. All in all we see a slow transition to 16Gb FC resulting from PMC Sierra`s policy.