You can view performance data for specific objects in your cluster. Objects are comprised of instances and counters. Counters provide data about the instances of an object.
An object is any of the following:
Each object has zero or more instances. For example, the LUN object has an instance for each LUN in your cluster.
The following illustration shows the relationship between an object and its instances and counters. In this illustration, the volume object has two instances: vol0 and vol1. The object's counters provide data about each of these instances. The illustration shows three of the object's counters: avg_latency, read_ops, and total_ops.