HP MPX200 Data Migration Planning Guide

2. Create a 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 spaces (chunklets) are assigned 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 a RAID group to the CPG to ensure 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:
1. In the 3PAR Inform Management Console, select Provisioning in the left pane, and
then click Create CPG.
2. In the Create CPG wizard, General page (Figure 10 (page 28)), enter a Name for
the CPG, and select values for the Device Type, Device Speed, RAID Type, and Set
Size. Select the Show advanced options panel(s) check box, and click Next to
continue.
Assigning LUNs from HP arrays 27