This field is the single lowest per-interval delta value on the live, currently-updating stats object for FCoE (Fibre Channel over Ethernet) payload bytes received on this converged network adapter's Ethernet uplink — the quietest interval seen across the retained collection history. This mainly matters as a sanity baseline — a DeltaMin of zero for bytesRx on this interface just confirms there were quiet intervals with none of this condition, while a DeltaMin well above zero would mean it never stopped happening even at its calmest. For example, a min of 32 bytes would reflect the quietest interval, such as one where the host issued no SCSI I/O over this path at all.