Creating a LUN Group

Context

• A LUN group can contain up to 4096 LUNs, and a LUN can be added to a maximum of 64 LUN groups.

In VM services:

• As LUN groups and host groups have been created on storage systems and have been added in to mapping views before delivery, you need only to add created LUNs into corresponding LUN groups.
• LUN groups vm_lun_group_0 and vm_lun_group_1 have been created on the storage system and LUNs vm_lun_0 and vm_lun_1 have been added into the LUN groups, respectively.

Do not delete the preset LUN information about the storage system. Otherwise, the VM service fails.

• New LUNs must be added to the LUN groups of corresponding controllers. Otherwise, VM performance will be affected. By default, LUN group vm_lun_group_0 maps to controller A, and LUN group vm_lun_group_1 maps to controller B.

Procedure

1. Log in to DeviceManager.
2. Choose Provisioning > LUN > LUN Group.
3. Click Create.

   The Create LUN Group dialog box is displayed.

4. Set basic properties for the LUN group.
   Table 4-10 describes related parameters.

   Table 4-10 LUN group parameters

   Parameter	Description	Value
   Name	Name of a newly created LUN group Name a LUN group in accordance with the following rules so that the LUN group is available to host applications. The name must be unique. The name can contain only letters, digits, periods (.), underscores (_), and hyphens (-). The name must contain 1 to 31 characters.	[Example] LUNGroup001
   Description	Description of a LUN group	[Example] -

5. Select the LUN you want to add to the LUN group.
   1. In the Available LUNs area, select one or multiple LUNs.

      To facilitate locating the LUN, select Shows only the LUNs that do not belong to any LUN group in the lower left corner of the dialog box.

   2. Click to add the LUNs to the Selected LUNs area.

6. Confirm the creation of the LUN group.
   1. Click OK.

      The Execution Result dialog box is displayed, indicating that the operation succeeded.

   2. Click Close.

Follow-up Procedure

In VM services, after adding LUNs into LUN groups, run the scan virtual_machine block owner_container_id=? command to scan for all LUNs on the controller.