Procedure
1. In the web interface system tree, click the logical unit node.
2. Click Access on the Logical Unit Overview pane to start the Access Policy wizard. The first step of
the access policy wizard provides an overview of the process.
3. After you read the overview, click Next to continue to the Modify Access Policies pane.
4. The tree titled Available shows a tree of all controller ports in the system with each port’s available
access policies underneath. The tree titled Assigned shows the policies currently in use for each port
in the system. If there are potential conflicts between policies that are assigned and policies that are
available, the conflicting available policies are disabled in the Available tree. If the system detects a
host server that is connected to the controller port for the access policy, the policy node’s connector
icon includes a plus sign.
a. To add an Access Policy, select the wanted policy node from the Available tree. When it is
highlighted, the >> button becomes enabled. Clicking this button moves the policy from the
Available tree to the Assigned tree. When a new policy is added to the Assigned tree, its text
color is green.
b. To remove an Access Policy, select the wanted policy node from the Assigned tree and click the
<< button. The policy is removed from the Assigned tree and added to the Available tree. When
an in-use policy is deleted from the Assigned tree, its text color is red in the Available tree. Policy
changes are not committed until the next step in the wizard.
5. When you finish making policy changes, click Next to continue to the modifications review page.
6. If policy modifications are only policy additions, click the Confirm check box and click Finish to exit
the wizard and commit the policy changes. If there are policy removals, you are required to enter the
admin login password to finish the wizard.
Logical unit masking
The logical unit (LU) masking feature assigns access policies to a LU on the storage system, thus
restricting access to specific host servers through a controller port.
About this task
This feature is opposed to Open Access where the LU is accessible to all hosts connected to the port.
When the LU masking feature is installed, access to specific hosts can be created through the web
management interface’s Access Policy wizard. With LU masking available, the wizard shows the
worldwide port names (WWPNs) of connected hosts in its Available policy tree. The wizard also
supports the ability to create host ID aliases. You can use a host ID alias to associate a meaningful text
name with a host’s WWPN.
Procedure
1. In the web interface, select the logical unit in the system tree.
2. To run the Access Policy wizard, click the Access button on the Logical Unit Overview screen.
3. To create an alias, click the New Alias button underneath the Available policy tree. This action opens
a dialog where you can enter the host’s WWPN in the Host ID text box and the alias name in the
Alias text box.
4. Click Add to finish and save the alias. The aliased host is listed in the Access Policies tree for each
controller.
5. To remove or edit existing aliases, use the Edit Alias button on the Access Policy wizard.
6. The Remove button deletes the currently selected alias. To change an alias’ name, select the alias in
the table and click the Re-alias button to enable the Alias table cell for editing. When changes are
complete, press the Enter key to leave edit mode and save the changes to the table. Click OK to exit
the dialog.
IBM FlashSystem 710 User’s Guide 17
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