Managing Host Autonomic Groups; Creating Host Sets; Adding Hosts To Host Sets; Modifying Host Sets - HP 3PAR StoreServ 7200 2-node Administrator's Manual

Managing Host Autonomic Groups

Hosts can be combined into autonomic groups. Autonomic groups are sets of objects that can be
managed as one object. If you have a group of hosts in a cluster and all the hosts require the same
administrative procedures, it is easier to group those hosts into a set and manage them together.
Individual hosts can be members of multiple host sets.
Hosts added to a set inherit the rights of that set. For example, if a virtual volume is exported to a
group of hosts and a new host is added to the host set, the new host can see the virtual volume as
soon as it is added to the host set. The opposite is also true. If a host is removed from a set, all the
rights of that host set are revoked for the removed host.
A host in a host set cannot be removed from the system until it has been removed from the host
set, or until the host set is removed from the system. Removing a host set does not remove the hosts
in that set. Changing the name of a host in a set does not change the rights of the host or remove
it from the host set.

Creating Host Sets

Any hosts added to the host set automatically see all VLUNs available to the host set, provided
there are no conflicting LUN IDs. If the added host has an exported LUN ID in the LUN ID range
of the host set, the host cannot see the LUN and must be assigned a new ID. For more information
about VLUN templates, see
To create a host set, issue the createhostset<set_name><host_names> command, where:
<set_name> is the name of the host set being created.
<host_names> are the names of the hosts included in the host set.
For a complete list of options available for the createhostset command, see the HP 3PAR
Command Line Interface Reference and the HP 3PAR CLI Help.

Adding Hosts to Host Sets

To add a host to an existing host set, issue the createhostset -add <set_name>
<host_names> command, where:
<set_name> is the name of the host set that will include the added hosts.
<host_names> are the names of the hosts being added to the host set.
For a complete list of options available for the createhostset command, see the HP 3PAR
Command Line Interface Reference and the HP 3PAR CLI Help.

Modifying Host Sets

To change the name of a host set, issue the sethostset -name <new_name> <set_name>
command, where:
<new_name> is the new name of the host set.
<set_name> is the name of the host set being modified.
For a complete list of options available for the sethostset command, see the HP 3PAR Command
Line Interface Reference and the HP 3PAR CLI Help.

Removing Host Sets

If a host is removed from a host set, the removed host loses all the rights of the host set and cannot
access volumes exported to the host set.
"Exporting Virtual Volumes" (page 90).
Managing Host Autonomic Groups 71