HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

The removehost CLI command is described in detail in the HP 3PAR InForm OS Command Line
Interface Reference and the CLI Help Pages.
• To completely remove a host definition from your system, issue the removehost
<host_name> [<WWN>... | <iscsi_name> ...] command, where:
◦ <host_name> is the host definition to be removed.
◦ <WWN>... is the WWN path or paths to the host to be removed.
◦ <iscsi_name>... is the iSCSI path or paths to the host to be removed.
NOTE: Physically disconnecting a host server from the system port does not delete the host from
the system.
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 “Exporting Virtual Volumes” (page 93).
• 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
InForm OS Command Line Interface Reference and InForm OS 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
InForm OS Command Line Interface Reference and InForm OS CLI Help.
Managing Host Autonomic Groups 75