The Sun Dual Port 4x IB Host Channel Adapter PCI-X is a high-performance low-latency network fabric interconnect based on 4x(10Gbps) InfiniBand (IB) technology. The Host Channel Adapter delivers RDMA-based, high-performance, low-latency I/O interconnect technology for Sun PCI and PCI-X platforms. RDMA and OS bypass technologies significantly reduce memory copy overhead, thereby improving CPU utilization. Based on IB architecture Specification Standard v1.1, the HCA can be deployed in highly available and scalable enterprise database clusters or in HPTC like highly compute intensive clusters.