I've never seen HBA's (or storage systems) with long wave SFP's in it and AFAIK those things don't even exist. You'll need some sort of switch that will handle transmitting over long distances (buffer credits and so on). You could use a small switch with a limited amount of SFP's to save some money or look for specific 2 port devices that will translate LW to SW for you.
Dear All,  Can long wave signal connect to HBA directly?  or it need to receive short wave signal only?  Thank you for any reply. Dennis Dai
Can long wave signal connect to HBA directly?