HP XP Array Manager Software - Manual (Page 43)

Figure 17 The Monitoring Options Window of Performance Monitor
The Monitoring Switch area in the Monitoring Options window contains the following items:
• Current Status
To start obtaining statistics of the storage system (that is, monitoring), select Enable. To stop
monitoring, select Disable. The default setting is Disable.
• Gathering Interval
Specify the interval to obtain usage statistics about the storage system for short range monitoring.
This option is activated when you specify Enable for Current Status. If CUs to be monitored are 64
or less, you can specify the value between 1 and 15 minutes by minutes, and the default setting is
1 minute. For example, if you specify 1 minute for the gathering interval, Performance Monitor
collect statistics (such as I/O rates and transfer rates) every one minute.
If CUs to be monitored are 65 or more, the gathering interval can be specified to the value 5, 10
or 15 minutes (in the 5-minute interval), and default is 5 minutes. For example, if you specify
the gathering interval to 5 minutes, Performance Monitor gathers statistics (such as I/O rate
and transfer rate) every 5 minutes.
This option is effective only for:
• Statistics displayed in the LDEV, Port-LUN, and WWN tabs
• Statistics displayed in the Physical tab with selecting shortrange for the storing period
When viewing the Physical tab with longrange selected for the storing period, the statistics
collected every 15 minutes are displayed regardless of the value of the Gathering Interval.
The Monitoring Target area in the Monitoring Options window contains the following items:
• PG Selection Support
If you click this button, all parity groups are listed in the PG list.
Note : If you click this button when a large-sized configuration is being used, it may take long
time to gather the PG list.
• PG list:
indicates the list of IDs of the parity groups that can be monitored. Each cell displayed in the
list is accompanied by an icon . Click PG on the header to sort the parity groups by ID. If
you click the cell for an individual parity group, the CUs that belong to that parity group are
displayed in the CU table on the right.
XP24000 Performance Monitor User's Guide 43