Hello Ratheesh.Chandran,   You do not have to use a switch. This resource can guide you : Deployment guide [URL]   Page 26-28 iSCSI protocol The 10 GbE iSCSI ports are used for:  Connecting to 10 GbE iSCSI hosts directly, or through a switch used for the 10 GbE iSCSI traffic   page 40 Configure iSCSI ports Configuring a Windows host with iSCSI network adapters page 47  
Is it possible to add 2 iscsi initiators to r450 servers via direct connection without switch from me4012 storage. The ports given from the controllers to the server are not up, can you help me?  
Me4012 iscsi with r450 server