Bandwidth control can be provided for input/output channels according to some aspects described herein. In one example, a system can detect an input/output (I/O) request transmitted by a software application. In response to detecting the I/O request, the system can determine a bandwidth group that corresponds to an I/O channel associated with the I/O request. The system can then determine whether bandwidth consumption of the bandwidth group exceeds a predefined bandwidth limit. If so, the system can execute a predefined policy assigned to the I/O channel for handling the I/O request.