Create LUN: Define Mapping to Specific Hosts

Map the LUN to one or more SAN hosts to allow only those specific hosts to access the LUN.

When you need to restrict access to a LUN, such as when the LUN contains sensitive data, map access to the LUN to a specific host or group of hosts.

Important! If the mapping you create does not make the LUN visible to the ESX host you selected, the newly created LUN will not become visible under the selected host on the Oracle FS tab.

Click the Mapping tab.
Select the appropriate Access Protocol: Fibre Channel (FC), iSCSI, or both.
This selection determines the protocols that will be permitted for accessing the LUN.
Important! When you select both FC and iSCSI protocols, the system uses FC optimized and non-optimized paths as a preference over iSCSI paths. Also, the system does not mix load balancing between protocols. See the release notes for your version to see whether iSCSI is supported.
Click the Only selected hosts option.
Select a Controller in the LUN Controller Assignment section.
Two storage Controller fields appear. For new LUNs, the Current Controller field is not available. From the Assigned Controller drop-down list, select a Controller or select auto assign.
If you select auto assign, the system determines the Controller. You can modify the value or select a new value after the LUN has been created.
To create a host mapping, click Create and select values for the LUN mapping fields:
- Host Name: Select the ESX host to associate to the LUN.
- LUN Number: Select the number to assign to the LUN for the selected host and click OK. This number must be unique for that particular host. It does not need to be unique across all hosts.
- (Optional) Limit available LUN numbers to LUN numbers not in use by ESX hosts: In the Create LUN Mapping dialog, the LUN numbers listed are LUN numbers available for the selected Oracle FS System host. Select this option to further restrict this list to only those LUN numbers not in use by that host as an ESX host in the vSphere environment. Selecting this option initiates a scan of the vSphere environment that might take several seconds to complete.
(Optional) Click OK and Continue to select additional hosts to map to the LUN.
In the Ports Masked for this LUN table, indicate which ports you want masked by selecting Yes or No in the Masked column.
(Optional) Click OK to create the LUN now.

Clicking OK saves the LUN with the LUN-to-host mapping and any attributes you set in the Quality of Service and Data Protection tabs.

After you have defined the host mappings for a LUN, you must next define Data Protection settings for the LUN.

For detailed information or definitions about the displayed data, review the Oracle Flash Storage System Administrator’s Guide.