HP XP P9000 for Compatible High Perf FICON Connectivity Software - Manual (Page 17)

3 Interoperability of Performance Monitor and other products
This chapter describes the interoperability of Performance Monitor and other products.
Cautions and restrictions for monitoring
•
Storage system maintenance
If the storage system is undergoing the following maintenance operations during monitoring,
the monitoring data might contain extremely large values.
◦ Adding, replacing, or removing cache memory.
◦ Adding, replacing, or removing data drives.
◦ Changing the storage system configuration.
◦ Replacing the microprogram.
◦ Formatting or quick formatting logical devices
◦ Adding on, replacing, or removing MP blades
•
Storage system power-off
If the storage system is powered off during monitoring, monitoring stops while the storage
system is powered off. When the storage system is powered up again, monitoring continues.
However, Performance Monitor cannot display information about the period while the storage
system is powered off. Therefore, the monitoring data immediately after powering on again
might contain extremely large values.
•
Microprogram replacement
After the microprogram is replaced, monitoring data is not stored until the service engineer
releases the SVP from Modify mode. While the SVP is in Modify mode, inaccurate data is
displayed.
•
Changing the SVP time setting
If the SVP time setting is changed while the monitoring switch is enabled, the following
monitoring errors can occur:
◦ Invalid monitoring data appears.
◦ No monitoring data is collected.
To change the SVP time setting, first disable the monitoring switch, change the SVP time setting,
and then re-enable the monitoring switch. After that, obtain the monitoring data. For details
about the monitoring switch, see
(page 28) .
•
WWN monitoring
You must configure some settings before the traffic between host bus adapters and storage
system ports can be monitored. For details, see
(page 23) , (page 23) , and (page 24) .
Cautions and restrictions for usage statistics
•
Usage statistics for the last three months (93 days) are displayed in long-range monitoring,
and usage statistics for up to the last 15 days are displayed in short-range monitoring. Usage
statistics outside of these ranges are deleted from the storage system.
•
In the short range, monitoring results are retained for the last 8 hours to 15 days depending
on the specified gathering interval. If the retention period has passed since a monitoring result
Cautions and restrictions for monitoring 17