Why are there different IO values under the storage Web UI dashboard and the server application console?

In the dashboard, we use the 4KB block size to measure the IOPS value. If we were to use 8KB/32KB or even 128KB to test storage benchmarks, the IOPS in your benchmarking utilities, such as fio or IOmeter, would be much less than what you see in the Web UI dashboard. But concept of total throughput is the same, i.e., Throughput = block size * IOPS.