Hi  Current EMC CLARiiON/VNX doesn't support long wave SFP so you should use FC switches I've heard there is some HBA which support LW SFP but it's not good idea to have pair of dark fibre per each host to connect them to remote storage. The best way to connect storages and host with 3.5 miles distance is to use two stretch FC fabric each consists of two FC switches on each side The swithes in stretch FC fabric are connected to each other by using ISLs over dark fibre  On Brocade switches use portcfglongdistance to configure BB credits on ISLs and portbuffershow to check if that amount of BB credits is enough  Best regards, Alex
Friends,  Can you please let me know what can be maximum distance between server  and a clariion .through Fiber Channel (FC) network. Do we need to allocate port buffers accordingly.  Thanks
Distance between server and Clariion