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# Analyze view

The Analyze view provides in-depth storage system data for various collection ranges.

## About this task

See Understanding Performance Management for an overview of Unisphere Performance Management.

Only applicable dashboards (dashboards that are defined in the dashboard catalog - see Manage dashboard catalog) are displayed for individual storage systems.

The All Array Analyze view allows you to easily compare and view analyze data for any performance registered array without having to go to the performance section for an individual array.

The Analyze view provides three tabbed views into your storage data. You can use the REAL TIME and DIAGNOSTIC tabs to debug and find causes for performance problems. You can use the HISTORICAL tab to view historical data, showing long-term trends, to plan for future needs.

REAL TIME tab | The default range is the previous 1 hour. The REAL TIME view collects data every 2 to 5 seconds for a limited group of metrics. The data is available for the previous hour. Saved real-time traces can also be viewed here.
DIAGNOSTIC tab | The default range is the previous 4 hours. The DIAGNOSTIC view collects data every 5 minutes (by default, but this setting can be changed to 10 or 15 minutes) for root cause analysis. The data is available for the previous 15 days (by default, but this value can be reduced). A maximum of a 24-hour time period can be viewed at a time.
HISTORICAL tab | The default range is the previous 24 hours. The HISTORICAL view collects data in hourly or daily intervals for trending and planning. The data is available for a maximum of the previous 3 years (18 months by default).

You can use the REAL TIME and DIAGNOSTIC information to find the cause of performance problems. Historical information shows long-term trends that you can use to plan for future requirements.

## Steps

1. Select a storage system.
2. Click Performance > Analyze.
3. Select a tabbed view. The following tabs are available:
   - REAL TIME
   - DIAGNOSTIC
   - HISTORICAL

   The DIAGNOSTIC tab is displayed by default.

4. To see more information about a storage system, click the ID of the storage system.
   More detailed data, displayed according to category, is presented.
5. To navigate between the different categories of information for that storage system, select a category from the drop-down menu in the breadcrumb trail.
   Categories for which there is no information available for that storage system are not displayed. The detailed information that is displayed for each storage system depends on the configuration and version of that storage system.
6. Optional: To configure the columns that are presented, click and select the columns that you want to view. For some analyze views, additional columns can be viewed.
7. To filter a column, click and type letters or numbers in the search box, depending on the datatype in the column being searched. For columns with numerical values, you can filter for exact values or for ones larger than or equal or smaller than or equal to the value. For example, 100, >100, >=100, <100, <=100. You can filter for a numerical range also. For example, 100–150.
8. To export data, click and select Export all data as CSV or Export all data as PDF.
9. Optional: To return to the top-level, table view of storage systems, click the storage system ID in the breadcrumb trail.
10. Optional: To take a trace for the last hour of real-time data. Click Capture Trace (available from the REAL TIME tab).