Q. are you talking about a standalone server, or a UCS managed rack mount server ?
f you need a direct connection to the server, it is best to connect it to a FC HBA (the Cisco VIC adaptors are CNA's; using it as a HBA is possible, but not straight forward).
eg. for a Cisco UCS C240 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)
Host Bus Adapters (HBAs):
N2XX-AEPCI03
(Emulex LPe 11002 Dual Port 4Gb Fibre Channel HBA
N2XX-AEPCI05
(Emulex LPe 12002 Dual Port 8Gb Fibre Channel HBA)
N2XX-AQPCI03
(QLogic QLE2462 Dual Port 4Gb Fibre Channel HBA)