The MIB's own DESCRIPTION for this object reads "iSCSI reads, IOs per second," which is a copy-paste error from the following iscsiTotalReadIops definition; the object's name (note it lacks the "Total" prefix used by its sibling, an inconsistency in the MIB's own naming) and position make clear it is meant to report iSCSI write IOPS. It counts write operations per second from iSCSI initiators, a key figure for databases and other block-storage workloads that are sensitive to write IOPS ceilings.