Learn about Granting Logical Drive Access To Hosts and Host Groups

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NOTE: Logical Drives that have not been assigned a LUN number will not display in the Mappings View.

After defining your Storage Partitions topology, you can select a defined host group or host in the Topology View of the Mappings Window and select the Configure >> Logical Drive-to-LUN Mappings >> Define New Mapping option to assign a specific logical drive and logical unit number (logical drive-to-LUN mapping). This designates that only the selected host group or host has access to the particular logical drive through the assigned LUN.

The storage management software manages the logical drive-to-LUN mappings. Host port requests for data issued for specific LUNs are routed to the appropriate logical drive by the controller firmware.

Important:

Granting Logical Drive Access to Host Groups

In the following example, three partitions have been configured.

The first partition consists of logical drive Financial. This logical drive is accessed by host KC-B using LUN 5. Even though host KC-B is part of the logical host group Kansas City, host KC-A cannot access this logical drive because the logical drive-to-LUN mapping was created with host KC-B rather than the host group Kansas City.

The second partition consists of logical drives Legal and Engineering. These logical drives are accessed by hosts KC-A and KC-B in host group Kansas City using LUNs 2 and 4, respectively.

The third partition consists of logical drives Marketing and H Resources. These logical drives are accessed by hosts Omaha A and B in host group Omaha using LUNs 7 and 2, respectively.

Granting Logical Drive Access to Hosts

In the following example, host Omaha has been granted access to logical drive Legal through LUN 6 through either of its host ports. Host KC has been granted access to logical drive Financial through LUN 6 and logical drive Engineering through LUN 7 through either of its host ports. Note that the same LUN (LUN 6 in this example) can be used for logical drive access for both hosts (Omaha and KC), because each host has its own LUN address space.

Reconfiguring your Logical Drive-to-LUN Mappings

A logical drive-to-LUN mapping is reconfigurable. You can:

Logical Drive-to-LUN mapping lets you associate a logical drive with a single logical unit number (LUN). Use the Mappings Window to define the logical unit number (LUN) for the logical drive and to specify which host group or host can access the logical drive.

Related Topics

Defining a Logical Drive-to-LUN Mapping

Changing a Logical Drive-to-LUN Mapping

Deleting a Host Group, Host, Host Port, or Logical Drive Mapping

Using the Mappings Window