It's surprisingly affordable I think you will find. List prices alone are very attractive: 36-port QDR (40gbits) switch http://www.colfaxdirect.com/store/pc/vi

It's surprisingly affordable I think you will find. List prices alone are very attractive: 36-port QDR (40gbits) switch http://www.colfaxdirect.com/store/pc/viewPrd.asp?idproduct=154&idcategory=7 http://www.colfaxdirect.com/store/pc/viewPrd.asp?idproduct=1... Dual port QDR HBA http://www.colfaxdirect.com/store/pc/viewPrd.asp?idproduct=1796&idcategory=6 http://www.colfaxdirect.com/store/pc/viewPrd.asp?idproduct=1... The cost benefits are compounding when you go up to FDR (56Gbits) and make use of RDMA aware protocols, like iSER, SRP or SMB3.