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# Modify queries using the Modify Query wizard

Performance management queries can be modified for certain statistics categories and their associated instances.

## About this task

The Modify Query wizard is launched from the Create Report dialog box. For more information about creating a report, see Create performance reports.

For some categories, you can configure the query to return the n most active instances. This feature is available for the following categories:

Category | Metrics
--- | ---
Storage Group | Host IOs/sec (default) Host MBs/sec Response Time
Storage Group Volumes | Host IOs/sec (default) Host MBs/sec Response Time
RFDS Group | Host IOs/sec (default) Host MB/Sec Response Time
RFDA Group | RDF R1 to R2 IOs/sec (default) RDF R1 to R2 MBs/sec RDF Response Time Host Writes/sec Host MBs Written/sec

To modify a query using the Create Query wizard:

## Steps

1. When creating a report, in the Create Report dialog box, click Modify to open the Modify Query wizard.
2. In the Query & Description page, modify the query Name.
3. Optional: Modify the query Description.
4. Click Next.
5. In the Category & Instances page, select a Category.
   Depending on the category type you select, different options are presented.
6. Specify appropriate Instances.
   Some or all of the following options are available:

   All | Displays all instances.
   Specific | Displays the specific instances that you select. Select them in the Available Instances list and click > to move them to the Selected Instances list. You can use multiselect for multiple instances. If required, you can filter the instances by name.

   Most Active | Displays the top n most active instances. You can specify a value for n and the metric by which you want to sort the displayed instances.

7. Click Next.
8. In the Metrics page, select a Data Format. The available options are Average and Maximum.
9. Select the Metrics (for the category and data format you selected on the Category & Instances page of the wizard). You can use multiselect for multiple metrics. If required, you can filter the metrics by name.
10. Click OK.

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