HP StorageWorks XP Remote Web Console Software - Manual (Page 214)

10 Usage Monitor Window Operations
This chapter describes the Usage Monitor window, which enables you to collect I/O statistics for
all volumes to be monitored on the connected storage system.
•
“Reviewing the Usage Monitor Window” (page 214)
•
“Starting and Stopping Usage Monitoring” (page 214)
•
“Displaying the Usage Monitor Graph” (page 214)
•
“Saving Monitoring Data in Text Files” (page 217)
•
“Saving Operation History into a Text File” (page 217)
Reviewing the Usage Monitor Window
The Usage Monitor window enables you to collect I/O statistics for all volumes to be monitored
on the connected storage system. The I/O statistics that are displayed in the window are collected
by Performance Monitor. The Usage Monitor is able to display the data of remote copy operations.
At each data sampling time interval that is specified from Performance Monitor, the Usage Monitor
window collects 1,440 pieces of data for each volume and up to 1,440 pieces of data can be
collected for entire volumes to be monitored.
Starting and Stopping Usage Monitoring
Starting and stopping usage monitoring can be set using Performance Monitor. For details about
starting and stopping usage monitoring, see the HP XP24000/XP20000 Performance Monitor
User’s Guide.
Displaying the Usage Monitor Graph
When usage monitoring is running, the Usage Monitor window can display user-selected remote
copy I/O statistics in real time.
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. The y-axis displays the number of I/Os during the last sampling
period. The legend (right side of the graph) indicates the data being displayed. A value on the
y-axis varies according to the maximum value of the statistical data that is displaying. If the value
on the 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).
To display the usage monitor graph:
1. Make sure that usage monitoring is running (Monitoring Switch = Enable). The usage monitor
graph can only be displayed when monitoring is on.
2. Right-click the graph area of the Usage Monitor window, and select Display Item to open the
Display Item window (see
Figure 87 (page 215) ).
3. Select an appropriate radio button in Select Volume, using the instructions in this step:
•
To display I/O statistics for all LDEVs to be monitored in the storage system, select ALL
Volumes.
•
To display I/O statistics for a specific journal group, select JNL Group, and then 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 LDEV, select Volume, and then specify the desired
LDEV by entering an LDKC number (00-01), a CU number (00-FE) and an LDEV number
(00-FF).
214 Usage Monitor Window Operations