Chapter 3. Graphical user interface overview 87
When logs are displayed in the command-line interface, the time
stamps for the logs in the CLI are the system time. However, when
logs are displayed in the management GUI, the time stamps are
translated to the local time where the web browser is running.
See 3.3.3, “Events” on page 93.
Performance Use real-time statistics to monitor CPU utilization, volume, interface,
and MDisk bandwidth of your system and nodes. Each graph
represents 5 minutes of collected statistics and provides a means of
assessing the overall performance of your system. You can use
system statistics to monitor the bandwidth of all the volumes,
interfaces, and MDisks that are being used on your system.
You can also monitor the overall CPU utilization for the system. These
statistics summarize the overall performance health of the system and
can be used to monitor trends in bandwidth and CPU utilization. You
can monitor changes to stable values or differences between related
statistics, such as the latency between volumes and MDisks. These
differences then can be further evaluated by performance diagnostic
tools.
Additionally, with system-level statistics, you can quickly view
bandwidth of volumes, interfaces, and MDisks. Each of these graphs
displays the current bandwidth in megabytes per second (Mbps), and
a view of bandwidth over time. Each data point can be accessed to
determine its individual bandwidth use and to evaluate whether a
specific data point might represent performance impacts.
For example, you can monitor the interfaces, such as for Fibre
Channel or SAS interfaces, to determine whether the host
data-transfer rate is different from the expected rate. You can also
select node-level statistics, which can help you determine the
performance impact of a specific node. As with system statistics, node
statistics help you to evaluate whether the node is operating within
normal performance metrics.
See 3.3.4, “Performance” on page 94.
Background Tasks Use the Background Tasks page to view and manage current tasks
that are running on the system. The Background Tasks page displays
all long-running tasks that are currently in progress on the system.
Tasks, such as volume synchronization, array initialization, and volume
formatting, can take some time to complete. The Background Tasks
page displays these tasks and their progress.
After the task completes, the task is automatically deleted from the
display. If a task fails with an error, select Monitoring → Events to
determine the problem.
See 3.3.5, “Background Task” on page 95.
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