HP StorageWorks XP Remote Web Console Software - Manual (Page 103)

TrueCopy for z/OS user guide 103
consistency groups are deleted (by the Cancel All command or the Omit command), the list status becomes
the Volume list.
For the Asynchronous Option operation, the Delete command is not available. You can either modify the
options you have set or cancel all the option settings you made.
NOTE: After the delete operation of the CT Group Operation command, the Modify command is not
available.
Usage Monitor Operations
Use the Usage Monitor window to perform the remote copy usage monitoring operations for the connected
disk array. The remote copy usage monitoring function can collect I/O statistics for all LDEVs on the
connected disk array.
The usage monitor operations are:
• Starting and stopping monitoring (see page 104)
• Displaying the usage monitor graph (see page 104)
Starting and Stopping Monitoring
At each data sampling time interval, the usage monitoring function collects 480 pieces of data for each
LDEV and up to 16,385 pieces of data for the entire disk array.
To start monitoring:
1. From the Usage Monitor window, enter the sampling time interval in minute(s) in the Rate list. You can
enter from 1 to 546 minutes. Entering more than five minutes is recommended.
2. Click Run in the Operation list.
3. Click Apply.
The collection of monitoring data continues, even if the window is closed, until you stop monitoring
operations. Monitoring data collection continues even if the SVP is rebooted. If a monitor starts, the data of
the sidefile usage is stored.
To stop monitoring:
1. From the Usage Monitor window, click Stop in the Operation list.
2. Click Apply. The monitoring process is stopped.
Displaying the Usage Monitor Graph
When usage monitoring is running, the Usage Operations window can display user-selected remote copy
I/O statistics in real time. The I/O statistics data is collected according to the data-sampling rate selected
in the Rate list.
The usage monitor graph plots the user-selected I/O statistics (up to 65 data points) on an x-y graph. The
x-axis displays time and the y-axis displays the number of I/Os during the last sampling period. The legend
is displayed on the right side of the graph. When the value for y-axis exceeds 10,000,000, the value is
displayed in exponential notation. For example, 1E7 = 1*10 7 = 10,000,000; 2E8 = 2*10 8 =
200,000,000. The Update box displays the most recent data sample time for the data graph.
To display the usage monitor graph:
1. Verify that the usage monitoring is running. Status should be Running.