Performance Monitoring Workflow - HPE XP7 User Manual

the primary and secondary volumes are swapped. You can collect the before-swapped
information immediately after you run any of the commands. Invalid monitoring data will be
generated for a short time but will be corrected automatically when the monitoring data gets
updated. The invalid data will temporarily be generated when the volume used for a secondary
volume is used as a primary volume after a Cnt Ac-J pair or Cnt Ac-J MF pair is deleted.
Display of monitoring data immediately after monitoring starts or immediately after
the sampling interval is changed
Monitoring data cannot be displayed within the first two sampling intervals after the monitoring
starts or the sampling interval is changed because no monitoring data has accumulated.
For instance, if the sampling interval is set or changed to 15 minutes, monitoring data is not
accumulated for up to 29 minutes after this setting is made.
Display of monitoring data during high SVP workload
If the SVP is overloaded, the system might require more time than the sampling interval
allows to update the display of monitoring data. If this occurs, a portion of monitoring data
is not displayed. For example, suppose that the sampling interval is 1 minute, and the display
in the Performance Management window is updated at 9:00 and the next update occurs at
9:02. In this case, the window (including the graph) does not display the monitoring result
for the period of 9:00 to 9:01. This situation can occur when the following maintenance
operations are performed on the storage system or on the Remote Web Console PC:
◦
Adding, replacing, or removing cache memory.
◦
Adding, replacing, or removing data drives.
◦
Changing the storage system configuration.
◦
Replacing the microprogram.
Pool-VOLs
Pool-VOLs of Fast Snap, Thin Provisioning, and Thin Provisioning MF are not monitored.
Margin of error
The short-range and long-range monitoring data might have a margin of error.

Performance monitoring workflow

1. Determine the resources to be monitored and the data to be collected, and write down the
required information, including control unit (CU) numbers and WWNs of host bus adapters.
2. Set the storing period (short-range or long-range) for the monitoring statistics. For instructions,
see "Setting the storing period for the monitoring data" (page
3. Start performance monitoring. For instructions, see
4. Add the WWNs that you want to monitor. For instructions, see
5. Add the CUs that you want to monitor. For instructions, see
6. Adjust the sampling interval as needed to increase or decrease the maximum storing period
of short-range statistics. For instructions, see
7. View the monitoring data on graphs. For details, see
graphs" (page
8. Export the monitoring data as needed for analysis and for retention of long-term data. For
details, see
9. When you want to stop collecting monitor data, stop monitoring by disabling the monitoring
switch. For details, see
24).
"Exporting Performance Monitor data" (page
"Stopping monitoring" (page
14).
"Starting monitoring" (page
"Monitoring WWNs" (page
"Monitoring CUs" (page
"Changing the sampling interval" (page
"Using the Performance Monitor data
49).
24).
Performance monitoring workflow
14).
15).
20).
23).
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