Product guide

172 EMC Ionix ControlCenter 6.1: Taking Control of Your Datacenter
Configuring and Controlling Your Datacenter
Figure 152 Use Properties view to determine if there is enough unallocated capacity
The administrator uses the LUN Capacity and RAID Level columns from the Properties
view to determine that there is enough unallocated capacity of the appropriate size
and RAID level for allocation to the Web server.
Creating LUSEs
Logical unit size expansion (LUSE) volumes combine two or more HP XP devices
(LDEVs) to function as one large device, much like a metadevice on a Symmetrix array.
The LUSE appears as a single large device instead of several smaller ones to the host.
The Properties view showed that there were enough unmapped 2.29 GB devices with
RAID 5 protection available to provide the 20 GB of new storage for the host. The
devices are located on control units (CU) 1 and 2.
Because these devices are not all on the same control unit (CU), the administrator
creates two LUSEs (a LUSE cannot contain devices with different CUs).
The administrator creates the LUSEs as follows:
1. In the Console tree, expands the folders Storage Systems, HP XP Arrays (if not
already expanded).
2. Right-clicks the StorageWorks XP array (30471), and selects Configure > Create
LUSE.