HP XP Array Manager Software - Manual (Page 59)

4 Grouping resources
This module describes how to group logical groups and storage tiers (resources).
Managing logical groups
This module describes how to manage logical groups.
About logical groups
A logical group is a group of hosts and volumes. A storage administrator creates logical groups and
assigns hosts and volumes to each logical group.
Logical groups allow you to:
• Create summary reports that indicate the current resource use in a storage environment by organ-
ization.
If you manage an entire system, you can create logical groups to generate usage summary reports
for each organization that uses storage.
• Monitor volumes and perform storage system operations by grouping managed resources (hosts
and volumes).
If you manage part of a system, you can categorize volumes according to the organizations that
use the storage. Grouping and categorizing volumes makes finding volumes easier and allows
you to perform daily operations for volume resources.
You can register multiple hosts or volumes to a logical group at one time by specifying a range of IP
addresses, or multiple items, such as operating system type and drive type. You can also change the
hierarchy of existing logical groups, or add and remove hosts and volumes. The same host(s) or
volume(s) can be registered to different logical groups. If a Tiered Storage Manager license has been
registered, use the Mobility tab to check the operation status of volumes per logical group or optimize
data arrangements. To efficiently find logical groups that have usage problems, use the Mobility tab
to check their rankings (e.g. logical groups that have small amount of unused capacity or use a large
amount of capacity per drive type).
Prerequisites for creating a logical group
Before creating a logical group, review the following conditions:
• The hosts and storage systems are registered in P9000 Command View AE Suite.
• When a host is assigned to a logical group, the volumes allocated to that host are also automat-
ically assigned to that logical group.
Only virtual hosts that are detected by Host Data Collector or Device Manager agent can be as-
signed to a logical group. Hosts detected by VMware™ ESX cannot be assigned.
• Mainframe volumes (MF-Vols) cannot be assigned to a logical group.
• Child groups cannot be created below host or volume groups. Child groups can be created only
below folders.
User Guide 59