An environment includes an active/passive array and 2Gbps ports for the array controllers, switches, and host HBAs. The SAN is fully redundant and highly available. A new host is attached and LUNs are

In an active/passive storage array configuration, only one controller is actively serving I/O for a given LUN at any time, even with multiple paths. Therefore, the maximum throughput for a single I/O path to a LUN is limited by the speed of the slowest component in that path, which is 2Gbps for the array controllers, switches, and host HBAs.

4Gbps would only be possible if the individual port speeds were higher, or if active/active arrays were used with proper multipathing to aggregate bandwidth, which is not the case here.

6Gbps is incorrect as it exceeds the speed of any single component port and is not achievable with the given configuration.

8Gbps is incorrect as it significantly exceeds the speed of any single component port and is not achievable with the given configuration.