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● Unsatisfactory front-end port performance might be a symptom of poor back-end performance (metro node to storage array
data path.)
● For metro node Metro systems, poor front-end port performance could result from either poor inter-cluster WAN link
performance, and/or poor remote cluster storage volume performance.
● Monitor other metro node performance statistics such as director CPU usage, front-end aborts, back-end aborts, storage
volume latency, or WAN latency for correlations and possible causes of the poor performance.
Finding a director or port in the list
1. Click
in the upper-right corner of the screen to open the Search text box.
2. In the Search text box, type the name of the director or port, and then press Enter. The matching item is highlighted. You
can click Previous and Next to move through the list of matches if applicable.
Viewing the Front End Ports dashboard
1. From the GUI main menu, click Performance.
2. Click + and then select Add Front End Ports Dashboard.
System Health
The System Health dashboard provides a visual representation of the results of the CLI health-check command. The
health-check command scans the major components of the system and outputs any errors and warnings. The GUI displays
the output of this command in various charts using colored status indicators that allow you to quickly view the cluster health,
component health, and health of other components such metro node Witness status (if installed). Use this dashboard to validate
the system health before or after any significant operations such as non-disruptive upgrades or reconfiguration of the system.
The System Health dashboard shows the following charts:
● Cluster Health — Displays the health status and other information for the cluster. The Transition/Health Indications
section at the bottom of the cluster health chart lists general errors and warnings for the cluster.
● Component Health — Shows the status of the storage objects and other components in each cluster.
● Metro node Product Information — Shows the type of metro node configuration, hardware, WAN connectivity (if
applicable), and version. Click the View Version Details link under the product information to view more detailed software
version information about the metro node system components.
● Metro node Witness (if applicable)—Shows the status and other details about metro node Witness. To see additional
metro node Witness details, click the View Status Details link at the bottom of the metro node Witness chart.
The last refresh time displays at the upper-right corner of the screen, however, you can manually refresh the data by clicking
the Refresh icon in the upper-right corner of the screen.
Colored status indicators
Each chart uses color in the status indicators to indicate the status of the corresponding components. The number on the
status indicator represents the number of components in that state. For example, if a cluster has four directors; two may report
a warning status (yellow) and two may be functioning (green).
Click anywhere in the status indicator to go to the corresponding component view to manage the component. For the Directors
and Metadata status indicators, additional information displays in a separate popup window when you click the status indicator.
In the popup window, click a director to view its properties. The System Health dashboard uses the following colors to indicate
the health of a component:
● Green—OK, the component is functioning.
● Yellow—Warning, the component is changing state or needs user attention.
● Red—Error, an error has occurred that requires user action.
● Grey—Unknown status, metro node cannot determine the status of the component.
Monitoring the system
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