HP XP P9000 Command View Advanced Edition Software - Manual (Page 59)

a THP/Smart pool. To allocate volumes from a tier, a Tiered Storage Manager license is required,
and tier policies must be established for storage systems that support tier policy configuration.
Volume allocation behaviors include:
• The settings assigned when allocating volumes to a host become the default settings for the next
volume allocation to the same host, but can be changed during volume allocation.
• If a variety of volumes with different characteristics have been allocated to a host, you can allocate
a new volume by selecting an existing volume to set the volume allocation criteria.
• If no volumes match the specified requirements, new volumes are created from unused capacity
and allocated to the host. When a basic volume is created, the volume is also formatted at the
same time.
• You can use keyword or criteria based searches to find existing unallocated volumes that meet
your requirements.
• When you allocate volumes to a host, LUN paths are assigned automatically. LUN paths are
storage port to host port mappings providing host access to volumes. The host port is a host bus
adapter (HBA). WWN nicknames can be displayed by the user to confirm target HBAs for a host
while editing LUN paths during, or after, volume allocation.
• Volumes can be allocated on ports where LUN security is not enabled. All hosts with access to the
port can access the volume.
• Volume allocation to a cluster should be done with logical groups. This ensures the same volumes
are allocated to all hosts in the cluster.
• Volume allocation does not occur until you approve the volume allocation plan and submit the
volume allocation task.
• When volumes are allocated to a host OS, you must create a file system on them and mount them,
before they can be used by host applications.
NOTE:
Before allocating volumes, review the available volume allocation methods. This will optimize your
ability to perform volume allocation, and help you understand the Allocate Volumes dialog box.
Volume allocation methods
When you allocate volumes, you can either:
• Select resources, such as volumes or hosts, then start the Allocate Volumes dialog box.
• Start the Allocate Volumes dialog box without first selecting a resource such as a volume or host.
If you select resources first, the Allocate Volumes dialog box will prompt you for less information.
Note that every volume allocation method involves clicking Allocate Volumes using a button, an Actions
pull-down menu item, or a General Tasks menu item, to start the Allocate Volumes dialog box. The
visible fields in the dialog will vary depending on your allocation method.
Volume allocation methods include:
• General tasks
From the Resources or Mobility tab, from General Tasks, click Allocate Volumes. This starts the
allocate volumes dialog screen. Because no resource was selected, you must configure host,
volume, and other volume allocation requirements.
• Selecting hosts
User Guide 59