The Performance page includes controls for you to customize how
information is displayed. You can determine the performance metrics that are displayed for storage
system resources such as volumes, disks, or ports and you can specify a time range for the
information. You can also determine the port metrics that displayed
for switches.
- View chart
- View performance information in a chart format. The chart shows
a visual representation of how resource performance trends over time.
Each line on the chart represents a metric and a resource. The y-axis
shows the unit of measurement for a metric. If more metrics were selected
with a different unit of measurement, an extra y-axis is shown on
the right side of the chart window.
- Hover the mouse pointer over points on a line to view a snapshot
of performance information at a specific time.
- View table
- View performance information in a table format. Each row represents
a resource and a time stamp. Each column represents a metric. You
can view other metrics and information for a resource by right-clicking
anywhere in the header row for the table and selecting more columns.
The type of resource determines the metrics and information that is
available. You can filter, sort, and customize the columns in a table.
- Metrics
- Add metrics to the performance chart. On the Select Chart
Metrics dialog, metrics are organized into Volume, Disk, Pool, Port, and Node categories.
The metrics and categories that are available depend on the type of resource that is being shown in
the chart. The number next to the name of the category represents the number of metrics that are
currently selected from that category.
- You can select multiple metrics at the same time and from
different categories, but you cannot include more than two unit types in the same view. For example, if you select
metrics that use % and ops/s as units of measurement, you cannot select more metrics that use
different units of measurement such as KiB/op or MiB/s.
- When you have added metrics to the chart, you can select or deselect
a metric from the list of displayed metrics to show or hide the corresponding
line in the chart.
- Hide and
show resources
- When the chart includes multiple resources, you can click the
icon next to a resource to show only the line for that resource. Each
icon is shown in a different color to match the color of line for
the resource.
- You can also show and hide resources in the chart by selecting
resources in the performance chart legend. To select multiple resources
at the same time, press Shift or Ctrl and click those resources. Press
Shift and click to select consecutive rows in the chart legend; press
Ctrl and click to select non-consecutive rows.
- If you hide a resource in the performance chart, the row for that
resource remains visible in the chart legend.
- You can show up to 10 resources in a chart at the same time.
- Data resolution
- Determine the granularity of the data that is shown in a performance view. Granularity
determines the points that are shown on the y-axis of a chart, the points on the lines in a chart,
and the rows in a table. When you first view performance information, the default time range is the
last 12 hours and the granularity matches the frequency of data collection (sample).
- To change the granularity of chart or table, select one of the
following options from the granularity menu:
- Daily
- Set the granularity to show 1-day increments for performance information that is shown on the
chart and table.
- This granularity is only available if the time range of the chart is more than one day.
- Hourly
- Set the granularity to show 1-hour increments for performance information that is shown on the
chart and table.
- This granularity is only available if the time range of the chart is more than one hour.
- Sample
- Set the granularity to show sample data collected, for example, at 15-minute intervals.
- This granularity is only available if the time range of the chart is less than two weeks.
- Data is displayed as 5-minute intervals in the chart only when data is available for all of the
selected time range. If data is not available at 5-minute intervals for any portion of the selected
time range, the data is displayed at 10-minute intervals.
Restriction: Each granularity has a maximum time range
for displaying data. This time range is dynamically calculated based
on the resources and metrics that are shown on the chart, and the
data points per line. When the maximum range is exceeded, the granularity
icon is disabled and a message indicates that there are too many lines
on the chart. To avoid this problem, reduce the time range or the
number of resources or metrics that are selected.
- Specify a time range
- You can change the time range to show performance metrics for a specific period.
- Ensure that performance data was collected during the time range that you select. If data was
not collected during the time range, the chart and table are blank. If data collection was
interrupted during the time range, the chart and table show gaps for the time increments when data
was not collected. For example, if you select a time range for the last seven days, but data was not
collected on day 4 and day 5, the lines in the chart do not show data for days 4 and 5.
- Hide and show chart
controls
- The performance view lists the names of resources that are being
shown in the chart and the controls for customizing that chart. Click
the vertical line to hide the controls and display the chart in the
entire window. Click the line again to show the controls.
- Export information about the chart to a file
- Export information in the chart or table to a CSV file.
- Open the performance
view in a separate web browser window
- Open a duplicate of the current performance view in a separate
web browser window. You can change the information that is displayed
in this separate window while retaining the original performance view
for comparison.
- Synchronize the time range across all the open performance
views
- Synchronize the time range across all the performance views that
are displayed in separate browser windows. Use this action when you
change the time range in a performance view and want to apply the
same time range to the other performance views.
-
Restriction: This action affects only the performance
views that are displayed in separate browser windows. The time range
of the performance view that is shown as part of the main window
for the GUI is not affected.
- For example, you can view the storage system volumes and open
separate browser windows for the host connections, pools, and managed
disks that are related to one of the volumes. If you change the time
range in the performance view for host connections, click the synchronize
button to apply the same time range to the views for pools and managed
disks. The performance view of the original volume is not changed.
- Actions for managing the resources in the performance chart legend
- The performance chart legend in the bottom section of the view
shows more information about the selected resources. Each row represents
a storage system, and each column provides extra asset and performance
information about the storage system.
On
the menu,
the following actions are available when you select one or more resources
in the chart legend:
- View resource Performance
- View the performance of resources that are internal or related
to a resource in the chart legend. For example, when you view the
performance of a SAN Volume Controller,
you can right-click it and view the performance of its internal
resources, such as disks, volumes, ports, managed disks, and back-end
storage.
- Information about an internal or related resource is shown in
a separate web browser window. This window uses the same time range
as the performance view in the main window of the GUI.
Tip: If you right-click a storage system and select Volume
performance, only the volumes for which performance data
was collected are shown. If performance data was not collected for
an internal or related resource, that resource is not shown in the
view.
- View Properties
- View key information about a resource, including asset, configuration,
capacity, and performance information.
- View Details
- View key details about a resource, including capacity, system
activity, and disk and volume utilization information.
- Launch Storage System GUI
- Open the GUI for the storage system.
- Export
- Export information in the chart legend to a CSV, PDF, or HTML
file. Columns that are hidden in the chart legend are not included
in the saved file.
On the menu, the following actions are available when you
select one or more resources in the chart legend:
- Key Metrics View
- View a set of predefined metrics for resources in the chart legend.
- Custom View
- Customize the set of metrics that are shown for resources in the
chart legend.
On the menus,
you can filter the storage systems that are shown in the chart legend.
