HP P6000 Performance Advisor Software - Manual (Page 28)

NOTE:
•
If you hover the cursor over the line or pie charts, the corresponding data values will be
displayed.
•
An additional legend for granularity that is provided in the panel indicates the type of data
points plotted in the chart.
Polling Interval
Indicates that the data points are the actual data collected.
Hourly Average Indicates that the data points are average of that hour's data.
Daily Average Indicates that the data points are average of that day's data.
Live Indicates that the data points are collected in real time.
Performance and state data
HP P6000 Performance Advisor collects performance and state data for all storage systems and
corresponding performance objects that it monitors. When adding a storage system for monitoring,
you configure the performance and state data collection polling intervals which determine the data
collected for the storage system and corresponding performance objects. The performance data
is provided by the HP P6000 Performance Data Collector instance, and state data is provided by
the HP P6000 Command View instance, which collects performance information and manages
the storage system respectively.
Performance data
The performance data collected for storage systems and objects for various supported counters, is
maintained as historical data in HP P6000 Performance Advisor. You can view this data in chart
and statistical table format. The statistical data comprises the basic and advanced statistics. You
can also generate reports, set threshold levels (minor and major) for storage systems and
performance objects for supported counters, and view their threshold summary. For more information,
see
“Statistical data” (page 30) .
In addition to historical data, you can view the live performance data samples for all storage
systems and corresponding performance objects that HP P6000 Performance Advisor monitors.
The live data is directly collected and displayed in charts for the selected storage system or
performance object. The live data collection is based on the polling interval and duration that you
configure. The polling interval signifies the duration after which a new data point must be plotted
in the chart. The duration signifies the period for which the live data points should be visible in the
chart.
When a storage system or performance object is deleted in HP P6000 Command View, the live
data sample is not displayed. However, you can still view the corresponding historical performance
data collected up to the date for that storage system or performance object. The historical data is
retained until the configured retention period (default 3 months) is complete, after which the data
is permanently deleted.
Data retention period
Data retention period constitutes the duration for which performance data for a storage system
and its objects is retained in HP P6000 Performance Advisor. You provide the data retention period
when configuring performance and state data collection intervals for a storage system. Once the
data retention period is reached, HP P6000 Performance Advisor triggers an auto purge for that
storage system and data is permanently purged. The retention period is based on the HP P6000
Performance Advisor management station date and time.
IMPORTANT: The performance data purge is scheduled for the 1st, 8th, 15th, and 22nd of each
month at 3:30 am.
28 HP P6000 Performance Advisor concepts