Monitoring Paths Between Host Bus Adapters And Ports; Viewing Hba Information; Viewing I/O Rates Between Hbas - HP XP20000 User Manual

Max.: Indicates the maximum transfer rate for the specified period.
Response Time: This column indicates the time for replying from the LU path when I/O accesses
are made from the host to the LU path. The unit is milliseconds. The average response time in the
period specified at Monitoring Term is displayed.
This column displays a hyphen (-) if the I/O rate is 0 (zero).

Monitoring Paths between Host Bus Adapters and Ports

If XP Performance Control is enabled, Performance Monitor can be used to monitor paths between
host bus adapters (HBAs) in host servers and ports on the storage system. HBAs are contained in host
servers and serve as ports for connecting the host servers to the storage system. This section describes
how to view I/O rates and transfer rates between host bus HBAs and ports.
Before taking the steps described in the following sections, you need to perform following operations:
1. Perform an XP Performance Control operation (see the HP StorageWorks XP24000/XP20000
Performance Control User Guide).
2. Start the monitoring by Performance Monitor in accordance with the procedure described in
"Starting and Stopping Storage System
between host bus HBAs and ports.

Viewing HBA Information

Viewing I/O Rates between HBAs

Performance Monitor monitors traffic between HBAs in the hosts and ports on the storage system, and
measures I/O rates (that is, the number of disk I/Os per second).
To view I/O rates:
1. Ensure that the Auto LUN window is displayed.
2. Click the WWN tab).
The tree displays a list of XP Performance Control groups (
Not Grouped.
To display host bus adapters (
Performance Control group.
To display host bus adapters (
double-click Not Grouped.
3. Select IOPS from the list on the right side of the window.
4. In Monitoring Term, do one of the following:
To view the I/O rate in real time, you must select the Real Time option, specify the number
of recent collections of statistics which should be displayed in the graph, and then click Apply.
To view I/O rates for a certain period of time in the last 24 hours, you must select the From
option, change the date and time in the From and To boxes, and then click Apply. Use the
arrow button and the sliders when you change the date and time in the From and To boxes.
For details on the Real Time option and the From option, see
Monitor Window" on page 49.
5. In the tree, do one of the following:
To view the I/O rate for host bus adapters in an XP Performance Control group, select the XP
Performance Control group.
92 Performance Monitor Operations
Monitoring" on page 60 and obtain the traffic data
) in the XP Performance Control group, double-click an XP
) that do not belong to any XP Performance Control group,
). Below that list, an item named
"WWN Tab of the Performance