HP StorageWorks XP Remote Web Console Software - Manual (Page 126)

126 Continuous Access XP Journal
NOTE: If you set 1 minute for Gathering Interval, the sampling data is held one day. If you set
15 minutes for Gathering Interval, the sampling data is held 15 days. When Gathering Interval is
changed, data obtained before the change is deleted.
4. To start monitoring, click Apply.
Stopping usage monitoring
1. On the connected local disk array, select the Usage Monitor tab.
2. In the Monitoring Switch box, select Disable.
3. To stop monitoring, click Apply.
NOTE:
•
Depending on the SVP’s load status, you might not be able to stop monitoring. If you cannot stop
monitoring immediately, wait for a while, and Refresh (top right of Command View XP or XP Remote
Web Console pane) to check the status of the monitor.
• Monitoring data collection continues, even if the pane is closed, until you stop monitoring operations.
Monitoring data collection continues even if the SVP is rebooted.
Displaying the usage monitor graph
When usage monitoring is running, the Usage Monitor pane displays user-selected remote copy I/O
statistics in real time. I/O statistics data is collected according to the data-sampling rate selected in the
Gathering Interval box.
The usage monitor graph plots user-selected I/O statistics (up to 65 data points) on an x-y graph. The
x-axis displays time. The y-axis displays the number of I/Os during the last sampling period. The legend
(right side of the graph) indicates data being displayed. A value on the y-axis varies according to the
maximum value of the statistical data displayed. If the value on the y-axis exceeds 10,000,000, the value
is displayed in exponential notation (for example, 1E7 = 1x10 7 = 10,000,000;
2E8 = 2x10 8 = 200,000,000).
1. Ensure that usage monitoring is running. The usage monitor graph can only be displayed when
monitoring is on.
2. Right-click the graph area of the Usage Operations pane, and click Display Item to open the Display
Item pane.
3. Do one of the following:
• To display I/O statistics for all LDEVs in the disk array, select Subsystem.
• To display I/O statistics for a specific journal group, select JNL Group, and enter a journal group
number (00-FF).
NOTE: If you specify an unused journal group, the graph is not displayed.
• To display I/O statistics for a specific LU, select Device, and select a port (CL1-A to CLG-R) enter the
G-ID (00-FE) and LUN (00-3FF).
NOTE: If you specify the unmounted LU, the graph is not displayed.
NOTE: When a graph displays, the CU and LDEV numbers appear above the graph. If the logical
volume is an external volume, # appears after the LDEV number. For more information about
external volumes, see the HP StorageWorks External Storage XP User Guide.