HP XP Array Manager Software - Manual (Page 42)

The following two types of traffic statistic are shown. Each traffic statistic contains the average
and maximum values.
• Traffic between the HBA and the selected port (shown in Per Port)
• Sum of the traffic between the HBA and all the ports connected to the HBA (shown in WWN
Total)
Notes:
• The traffic statistics that apply only to the HBAs below Monitor appear in the list.
• The WWN Total traffic statistics are displayed in the list when you select an icon in the lower-
left tree. If you select the Subsystem folder in the lower-left tree, the sum of the traffic of the
HBAs registered in each Performance Control group is displayed. For details on Performance
Control groups, see “
Grouping Host Bus Adapters ” on page 46.
6. Analyze the information in the list and then determine upper-limit values that should be applied
to non-prioritized WWNs. If necessary, determine threshold values that should be applied to
prioritized WWNs. For details, see
“
If Many-to-Many Connections Link HBAs and Ports ” on page 30.
Setting Priority for HBAs
If a many-to-many connection is established between HBAs and ports, you need to define the priority
of WWNs, measure traffic between each HBA and the port that the HBA is connected to, and analyze
the traffic.
Specify a HBA existed on a server on which high-priority processing is performed, as a prioritized
WWNs. Specify a HBA on a server on which low-priority processing is performed, as a non-prioritized
WWNs.
To set the priority of HBAs:
1. Start XP Performance Control (see “ Starting Performance Control ” on page 34).
The Performance Control window is displayed.
2. Click the WWN tab ( Figure 4 on page 21).
3. Select All from the list at the top right corner of the window.
4. In the upper-left tree, double-click a port.
5. Double-click Monitor, which is displayed below the specified port.
6. Check to see that all the WWNs of the HBAs are controlled by using XP Performance Control
which appears below Monitor.
If some of the WWNs are missing, use the procedure in
“
Monitoring All Traffic between HBAs and Ports ” on page 39.
7. Select Monitor to display the information for the HBAs that are monitored in the list on the right
of the tree.
8. Right-click a HBA (WWN) in the list and then select Non-Prio -> Prio from the pop-up menu.
The Attribute column of the selected WWN in the list displays Prio. To specify more than one
prioritized WWN, repeat this operation.
NOTE:
You cannot change the priority of a WWN which is contained in a Performance Control group.
For details on how to change the attribute of a WWN contained in a Performance Control group,
see “
Switching Priority of a Performance Control Group ” on page 47.
XP Performance Control Operations 42