Viewing node and aggregate available IOPS values
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You can monitor the available IOPS values for all nodes or for all aggregates in a cluster, or you can view details for a single node or aggregate.
Available IOPS values appear in the Performance Explorer page charts. For example, when viewing a node in the Performance/Node Explorer page, you can select the “Available IOPS” counter chart from the list so you can compare the available IOPS values for multiple aggregates on that node.
![available iops zoom](../media/available-iops-zoom.gif)
Monitoring the available IOPS counter enables you to identify:
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The nodes or aggregates that have the greatest available IOPS values to help determine where future workloads can be deployed.
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The nodes or aggregates that have the smallest available IOPS values to identify the resources you should monitor for potential future performance issues.
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The busiest volumes and LUNs on an aggregate that has a small available IOPS value.