What is SCSI RDMA Protocol (SRP)?
"The SCSI RDMA Protocol (SRP) is an emerging industry standard protocol for utilizing block storage devices over an InfiniBand™ fabric. The use of RDMA makes higher throughput and lower latency possible than what is possible through e.g. the TCP/IP communication protocol. RDMA is only possible with network adapters that support RDMA in hardware."
Here is the diagram. With this, you can use Infiniband as an alternative interconnect instead of relying on Fibre Channel. The advantages of Infiniband is obvious. It has tremendous high throughput and low latency which is important for High Read -Write.