Learn About Granting Logical Drive Access to Hosts and Host Groups
After defining the , you can begin to assign access to the or that are defined in the Topology pane of the Mappings tab.
Typically, logical drive access is defined by assigning a using the Storage Partitioning Wizard. This wizard lets you grant a host group or host access to a specified logical drive
or a number of logical drives in the . To learn more about the wizard, refer to the section, “Preview of the Storage Partitioning Wizard.”
Keep these guidelines in mind when you grant logical drive access:
Each host has its own address space and will let the same LUN be used by different host groups or hosts to access logical drives in a storage subsystem.
You can define one mapping for each logical drive in the storage subsystem.
Mappings are shared between in the storage subsystem.
The same LUN cannot be used twice by a host group or a host to access a logical drive. You must use a unique LUN.
An mapping is not required for storage subsystems.
An access logical drive mapping is assigned to every host created from the default group if both of these conditions exist:
Your storage subsystem is managed by using an out-of-band connection.
An access logical drive mapping is assigned to the .
To prevent this assignment from happening, remove the access logical drive mapping from the Default Group. For more information,
refer to the Removing an Access Logical Drive Mapping online help topic.
Not every operating system will have the same number of LUNs available for use. Be sure to read the restriction information
in the Restricted Mappings online help topic before setting up mappings.
A Preview of the Storage Partitioning Wizard
You will see these dialogs when you use the Storage Partitioning Wizard:
The Storage Partitioning - Introduction dialog describes the process of creating a storage partition. This dialog reminds you that you must create the required logical
drives and host groups, hosts, or both, before continuing the wizard.
The Storage Partitioning - Select Host Group or Host dialog lets you select a single host group or host for which access is to be defined.
The Storage Partitioning - Select Logical Drives/LUNs dialog helps you select a logical drive and assign a LUN that the host group or host will use to access the logical drive.
This dialog is the last step of the wizard.
Reconfiguring Mappings
A mapping is reconfigurable. You can perform these tasks: