Setting priority for WWNs: many-to-many connections
If many-to-many connection is established between HBAs and ports, you need to define the priority of WWNs, measure the traffic between the HBAs and the ports that the HBAs are connected to, and analyze the traffic data.
The HBAs are divided into two types: prioritized WWNs and non-prioritized WWNs. Specify an HBA on which high-priority processing is performed as a prioritized WWN. Specify an HBA on which lower-priority processing is performed as a non-prioritized WWN.
Before you begin
- Required role: Storage Administrator (System Resource Management)
- You must enable the Device Manager - Storage Navigator secondary window. For details, see the System Administrator Guide of your storage system.
Procedure
Click to open the Server Priority Manager window.
Click
to change to Modify mode.
In the Server Priority Manager window, click Server Priority Manager. The Server Priority Manager main window appears.
Select the WWN tab.
Select All from the list at the top right corner of the window.
In the upper-left tree, double-click a port.
Double-click Monitor, which is displayed below the specified port.
Check to see if all WWNs of the host bus adapters to be controlled by using Server Priority Manager appear below Monitor.
If some of the WWNs are missing, use the procedure in Monitoring all port-HBA traffic: many-to-many connections to move all WWNs to below Monitor.Click Monitor to display the information of the host bus adapters that are monitored in the list on the right of the tree.
Right-click a host bus adapter (WWN) in the list, and in the pop-up menu select .
The Attribute column of the selected WWN in the list displays Prio. If you want to specify more than one prioritized WWN, repeat this operation.Right-click a host bus adapter (WWN) in the list, and in the pop-up menu select .
The Attribute column of the selected WWN in the list displays Non-Prio. If you want to specify more than one non-prioritized WWN, repeat this operation.NoteYou cannot change the priority of a WWN which is contained in an SPM group. For details on how to change the attribute of a WWN contained in an SPM group, see Changing the priority of an SPM group.You must set upper limit values for the Non-prio. specified ports. For details, see Setting upper-limit values for non-prioritized WWNs: many-to-many connections.Repeat steps 6 to 11 for ports (except for the port selected in step 6).
If one host bus adapter is connected to multiple ports and you specify the priority of the host bus adapter for one port, the specified priority will be also applied to the host bus adapter settings for other connected ports automatically.In the Server Priority Manager main window click Apply to apply the settings to the storage system.
Results