Changing a Logical Drive-to-LUN Mapping

Use this option to change either the assigned logical unit number (LUN) for a logical drive, or the logical drive's associated host group or host.

How to Change a Logical Drive-to-LUN Mapping

1 From the Storage Partition Definitions Window, select a single logical drive from the Mappings View, then select either (1) the Configure >> Logical Drive-to-LUN Mappings >> Change Mapping pull-down menu option, or (2) Change Mapping from the right-mouse pop-up menu.

Result: The Change Mapping dialog is displayed. The name and unique identifier of the selected logical drive are listed on the dialog.
2 Change the mapping as follows:

If you want to change the... Then...
LUN Select a single Logical Unit Number (0 through 31) from the LUN drop-down list box. By default, the current LUN associated with the selected logical drive is displayed.

Important: The full range of logical unit numbers is displayed because the same LUN can potentially participate in multiple mappings, because each host has its own LUN address space. However, a logical drive can only be mapped to a single LUN and a single host group or host.
Host Group or Host Select a single name from the drop-down list box. The drop-down list box displays the term Default Host Group followed by an alphabetical list of all defined host group or host names in the form Host Group <Host Group Name> or Host <Host Name>. By default, the current host group or host associated with the selected logical drive is displayed.
3

Select OK to save the logical drive-to-LUN mapping and close the dialog.

Result: The logical drive-to-LUN mapping is checked for validity and saved. The Mappings View is updated to reflect the new mapping. The Topology View is also updated to reflect any movement of host groups or hosts from under the Default Host Group if the logical drive-to-LUN mapping was changed to a host group or host that did not previously have any specific logical drive-to-LUN mappings.

Important:

  • If you change the assignment for a host group or host that only has one logical drive-to-LUN mapping, the host group or host will move back to the Default Host Group and inherit any default mappings.

  • If you want to change the last mapping of a host group that also has an associated host with specific mappings, then you must delete or move the host mappings first.