Which of the following is the BEST choice for a clustered host interconnect?

The best choice for a clustered host interconnect is Fibre Channel because it is specifically designed for high-speed data transfer and offers low latency, which are critical requirements in a clustered environment. Fibre Channel provides high bandwidth capabilities, commonly supporting speeds of 8Gbps, 16Gbps, and even higher in advanced implementations, making it very well-suited for applications that require fast access to shared storage systems.

Additionally, Fibre Channel operates with a dedicated network architecture that enhances reliability and performance, reducing network congestion and ensuring that data is transmitted efficiently between clustered hosts and storage devices. This is particularly important in environments where multiple servers need to access the same data concurrently, as in the case of high-availability applications and virtual machine clustering.

While Infiniband is also a high-speed interconnect option frequently used for clustered systems, it may not be as widely supported for traditional SANs compared to Fibre Channel. Both Ethernet options (1Gb and 10Gb) can be used in some clustered environments, but they generally introduce higher latencies and may not provide the same level of data integrity and reliability as Fibre Channel in high-demand scenarios. Thus, for optimal performance and reliability in a clustered host interconnect, Fibre Channel remains the premier choice.