Procedure 12.3. Adding iSCSI Storage

1. Click the Storage resource tab to list the existing storage domains in the results list.
2. Click the New Domain button to open the New Domain window.
3. Enter the Name of the new storage domain.
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   Figure 12.2. New iSCSI Domain

4. Use the Data Center drop-down menu to select an iSCSI data center.
   If you do not yet have an appropriate iSCSI data center, select (none).
5. Use the drop-down menus to select the Domain Function / Storage Type and the Format. The storage domain types that are not compatible with the chosen data center are not available.
6. Select an active host in the Use Host field. If this is not the first data domain in a data center, you must select the data center's SPM host.

   Important

   All communication to the storage domain is via the selected host and not directly from the Red Hat Enterprise Virtualization Manager. At least one active host must exist in the system, and be attached to the chosen data center, before the storage is configured.
7. The Red Hat Enterprise Virtualization Manager is able to map either iSCSI targets to LUNs, or LUNs to iSCSI targets. The New Domain window automatically displays known targets with unused LUNs when iSCSI is selected as the storage type. If the target that you are adding storage from is not listed then you can use target discovery to find it, otherwise proceed to the next step.

   iSCSI Target Discovery

   1. Click Discover Targets to enable target discovery options. When targets have been discovered and logged in to, the New Domain window automatically displays targets with LUNs unused by the environment.

      Note

      LUNs used externally to the environment are also displayed.
      You can use the Discover Targets options to add LUNs on many targets, or multiple paths to the same LUNs.
   2. Enter the fully qualified domain name or IP address of the iSCSI host in the Address field.
   3. Enter the port to connect to the host on when browsing for targets in the Port field. The default is 3260.
   4. If the Challenge Handshake Authentication Protocol (CHAP) is being used to secure the storage, select the User Authentication check box. Enter the CHAP user name and CHAP password.
   5. Click the Discover button.
   6. Select the target to use from the discovery results and click the Login button.
      Alternatively, click the Login All to log in to all of the discovered targets.
8. Click the + button next to the desired target. This will expand the entry and display all unused LUNs attached to the target.
9. Select the check box for each LUN that you are using to create the storage domain.
10. Click OK to create the storage domain and close the window.