Long-Range Monitoring - HPE XP7 User Manual

The sampling interval is the length of time between data collection events for short-range
monitoring. The following number of CUs to be monitored determines the options for setting the
sampling interval:
Up to 64 CUs. If there are 64 or fewer CUs to be monitored, you can set the sampling interval
from 1 minute to 15 minutes in increments of 1 minute. For example, when the sampling
interval is set to 3 minutes, Performance Monitor collects statistics once every 3 minutes.
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Performance Monitor collects statistics for 1 day when data is collected at 1-minute
intervals.
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Performance Monitor collects statistics for up to 15 days when data is collected at
15-minute intervals.
More than 64 CUs. If there are more than 64 CUs to be monitored, you can set the sampling
interval to 5, 10, or 15 minutes.
◦
Performance Monitor collects statistics for one day when data is collected at 5-minute
intervals.
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Performance Monitor collects statistics for up to three days when data is collected at
15-minute intervals.
For short-range monitoring the SVP can store a maximum of 1,440 data collection events if there
are 64 or fewer CUs to be monitored. Based on this number and the sampling interval, you can
calculate the maximum storing period for the statistics as the sampling interval multiplied by
1,440. For example, if you set the sampling interval to 1 minute, the maximum storing period for
the statistics is 1 day (24 hours):
1 minute x 1440 = 1440 minutes = 24 hours = 1 day
If you set the sampling interval to 15 minutes, the maximum storing period for the statistics is 15
days:
15 minutes x 1440 = 21600 minutes = 360 hours = 15 days
This maximum storing period is the maximum range of display in the Monitor Performance
windows. When you specify one minute for the sampling interval as in the example above,
Performance Monitor displays the statistics for a maximum of one day (24 hours) in the lists and
graphs. When you specify 15 minutes for the sampling interval, Performance Monitor displays
the statistics for a maximum of 15 days in the lists and graphs.
If there are more than 64 CUs to be monitored, SVP can store a maximum of 288 data collection
events. Based on this number and the sampling interval, you can calculate the maximum storing
period for the statistics as the sampling interval multiplied by 288. For example, if you set the
sampling interval to 5 minutes, the maximum storing period for the statistics is 1 day (24 hours):
5 minutes x 288 = 1440 minutes = 24 hours = 1 day
This maximum storing period is the maximum range of display in the Monitor Performance
windows. When you specify one minute for the sampling interval, as in the previous example,
Performance Monitor displays the statistics for a maximum of 1 day (24 hours) in the lists and
graphs. When you specify 15 minutes for the sampling interval, Performance Monitor displays
the statistics for a maximum of three days in the lists and graphs.

Long-range monitoring

When you perform long-range monitoring of the storage system, you control when the statistics
are collected in real time or during a specified period of time. The long-range monitoring statistics
are collected at fixed 15-minute intervals (0, 15, 30, and 45 minutes of every hour) and stored
for up to 6 months (186 days). Long-range monitoring occurs in parallel with and does not affect
short-range monitoring activities.
10 Performance Monitor operations