NOTE:
For accurate data, do not change the system date or time while using background performance monitor. If you must
change the system date, stop and restart the background performance monitor.
5
To manually stop background performance monitoring, click the
Stop
link.
Background performance monitoring automatically stops when you close the Enterprise Management Window (EMW). Background
performance monitoring also might stop when you start a firmware download. You are prompted to save the background performance
monitoring data when this happens.
NOTE:
When you close the EMW, you might be monitoring more than one storage array. Performance data is not saved for
any storage array that is in the Unresponsive state.
A dialog is displayed asking you whether you want to save the performance data.
6
Do you want to save the current Performance Monitor data?
•
Yes
– Click
Yes
, select a directory, enter a filename, and then click
Save
.
•
No
– Click
No
.
7
To close the
View Current Background Performance Monitor
dialog, click
Close
.
Viewing information about the current background
performance monitor session
Before performing this task make sure that the background performance monitoring is in progress. You can tell that background
performance monitoring is in progress by the presence of the
In Progress
icon next to the
Stop
link in the
View Current Background
Performance Monitor
dialog.
1
In the Array Management Window (AMW), click the
Performance
tab.
2
Click the
Launch background performance monitor
link.
The
View Current Background Performance Monitor
dialog is displayed.
3
Hold the pointer over the
Stop
link.
A tooltip displays the time background performance monitoring was started, the length of time background performance monitoring
has been in progress, and the sampling interval.
NOTE:
For an accurate elapsed time, do not use the Synchronize RAID controller module Clocks option while using
Performance Monitor. If you do, it is possible for the elapsed time to be negative.
Viewing current background performance monitor data
A background performance monitor graph plots a single performance metric over time for up to five objects. The x-axis of the graph
represents time. The y-axis of the graph represents the metric value. The metric value is displayed in thousands (K), when the value
exceeds 99,999, starting with 100 K until the number reaches 9999 K, then the value is displayed in millions (M). For amounts greater than
9999 K but less than 100 M, the value is displayed in tenths—for example, 12.3 M.
1
In the Array Management Window (AMW), click the
Performance
tab.
2
Click the
Launch background performance monitor
link.
The
View Current
option is available only when performance monitoring is in progress. You can tell that background performance
monitoring is in progress by the presence of the
In Progress
icon next to the
Stop
link. The
View Current Background Performance
Monitor
dialog is displayed.
3
In the
Select metric
drop-down list, select the performance data that you want to view.
You can select only one metric at a time.
4
In the
Select an object(s)
list, select the objects for which you want to view performance data.
You can select up to five objects to monitor on one graph. Use Ctrl-Click and Shift-Click to select multiple objects. Each object is
plotted on a separate line on the graph.
34
About your MD Series storage array
