This FAQ answers common questions about how IOPS numbers are derived from Data ONTAP storage systems.
Before CDOT 8.3.1 Node IOPS are made up of protocol IOPS. In CDOT 8.3.1. and later, they are made up of system constituents metrics. They include 'only' requests for data, request that come through the front door, but do not include backend tasks like snapmirrors, dedupe, and so on. On the other hand these tasks do produce disk IOPS, therefore Aggregate IOPS. Hence you might see Aggregate IOPS higher than the Node IOPS.
Other OPS = Total - (Read + Write)