The Cisco SFS 7012D provides nonblocking switching for up to 144 and 288 InfiniBand 4X ports respectively. Each port can operate in double data rate (DDR) mode, which delivers 20 Gbps, or single data rate (SDR) mode, which delivers 10 Gbps for server or inter-switch link connectivity. The Cisco SFS 7012D supports fully redundant, hot-swappable components that are ideal for building large-scale, highly available clusters for HPC applications. The Cisco SFS 7012D is optimized for very large, high-density HPC environments and deliver nonblocking, high-bandwidth, low-latency switching in a cost-effective form factor.