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6. Select the LUNs to be assigned to the DM-Host by checking the box associated with the previously planned LUNs, as shown in Figure B-7.
Figure B-7. Selecting LUNs
7. To accept and save the LUN assignment, click OK.
8. Refresh the data migration user interface to see if the LUN assignment is reflected properly, and that the appropriate array entity appears under FC Array. (You may need to click the Refresh button several times to correctly reflect the changes.)
Assigning LUNs from an HP 3PAR Array
To assign LUNs:
1. Create a host entity for router ports on the array; this step is needed to map the LUNs to the routers.
a. In the 3PAR Inform Management Console, select Hosts in the left pane, and then click Create Host.
b. On the Create Host wizard, General page (see Figure B-8), enter a Name for the host, and then in the Persona box, select
Generic-ALUA as the host type. Click Next to continue.
Storage Vendor HP
Array Model 3PAR® Utility Storage arrays LUN Assignment Tool 3PAR Inform Management Console
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Figure B-8. Creating a Host: General
c. On the Create Host wizard, Fibre Channel page (see Figure B-9), select all VP ports under Available WWNs, and then click the left arrow to move them to the Assigned WWNs column. Ensure that you create a single host entity for all WWPNs from a single VPG. For example, all VP1 ports from the router’s Fibre Channel ports must be part of one host entity. Create a separate host for VP2, VP3, and VP4.
Then click Finish to create the hosts.
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Figure B-9. Creating a Host: Fibre Channel
2. Create a common provisioning group (CPG), which is a buffer pool of logical disks that you use to create LUNs (virtual volumes). CPGs have the
following qualities:
A CPG is a thin-provisioned entity. Physical space (chunklets) are assigned as and when virtual volumes are created (depending on whether the LUN is thick- or thin-provisioned).
You can create a CPG for any specific disk type and speed.
You can assign to the CPG a RAID group that ensures that any LUN (virtual volume) created using this CPG has an assigned RAID level.
You can create multiple CPGs without consuming physical space on disks.
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a. In the 3PAR Inform Management Console, select Provisioning in the left pane, and then click Create CPG.
b. On the Create CPG wizard, General page (see Figure B-10), enter a Name for the CPG, and then select values for the Device Type, Device Speed, RAID Type, and Set Size. Select the Show advanced options panel(s) check box, and then click Next to continue.
Figure B-10. Creating a CPG: General
c. On the Create CPG wizard, Allocation Settings page (see
Figure B-11), either accept the default Availability setting, or select either Port, Magazine, or Cage, depending on the available array model and disk types. Do not change the default Step Size and Preferred Chunklets settings. Click Next to continue.
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Figure B-11. Creating a CPG: Allocation Settings
d. On the Create CPG wizard, Disk Filter page, either accept the default disk filter, or select a new filter with which to select disks for the CPG.Click Next to continue.
e. On the Create CPG wizard, Summary page, review your settings and then either click Prev to go back and change the selections, or click Finish to create the CPG.
f. In the left pane under Provisioning, click CPGs to view the newly created CPG in the right pane. Total capacity is shown as 0.00 because no virtual volumes have been created on this CPG
3. Create virtual volumes (LUNs) using any of the available CPGs. The LUN type (thin- or thick-provisioned determines if the actual disk consumption by a CPG.
a. In the 3PAR Inform Management Console, select Provisioning in the left pane, and then right-click Virtual Volumes.
b. On the shortcut menu, click Create Virtual Volume.
c. On the Create Virtual Volume wizard, General page (see Figure B-12), follow these steps:
Under General, enter a Name for the volume.
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Under User Space, specify the volume Size, Provisioning option, CPG name.
For thin-provisioned volumes, set the Allocation Warning based on the percentage of available space.
Under Grouping, specify the Count (number of virtual volumes to be created at one time within the set). 3PAR automatically enters a Set Name.
Click Next to continue.
Figure B-12. Creating a Virtual Volume: General
d. On the Create Virtual Volume wizard, Copy Space Settings page, select <none> for the CPG copy space. (Copy space creates a backup of the same virtual volumes, which you can store on a different CPG.) Click Next to review the virtual volume configuration.
e. On the Create Virtual Volume wizard, Summary page, review your settings and then either click Prev to go back and change the selections, or click Finish to create the virtual volume.
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f. In the left pane under Provisioning, click Virtual Volumes to view the newly created volume details in the right pane. Thin-provisioned volumes will show minimal used space (by default, they occupy some space for administrative data).
4. Map a virtual volume to the host as follows:
a. In the 3PAR Inform Management Console, right-click Hosts in the left pane, and then on the shortcut menu, click Export Volume.
b. On the Export Virtual Volume wizard, General page, click one of the following, and then click Next:
Click the Virtual Volume button, and then manually select one or more volumes from the list.
Click the Virtual Volume Set button; all virtual volumes in the set are automatically selected.
c. On the Export Virtual Volume wizard, Settings page (see Figure B-13), do the following, and then click Next:
Click Host, and then select the host to which the virtual volumes must be presented.
For Port, accept the default option, <none>.
For LUN, either type the ID in the box, or select the Auto check box to have the LUN ID assigned automatically. If there are multiple virtual volumes, subsequent IDs are assigned starting from the entered value.
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Figure B-13. Exporting a Virtual Volume: Settings
d. On the Export Virtual Volume wizard, Summary page, review your settings and then either click Prev to go back and change the selections, or click Finish to export the virtual volume.
e. In the left pane under Hosts, click Virtual Volumes to view the volume details in the right pane. Under Host Details in the right pane, click the VLUNs tab, and then click the Path Summary tab (see Figure B-14).
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