HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

from the Host Explorer agent is visible for uncreated hosts and assists with host creation and
diagnosing host connectivity issues.
When a host is created on the system, unassigned WWNs or iSCSI names are presented to the
system. Without the Host Explorer agents running on the attached hosts, the system is unable to
determine which host the WWN or iSCSI names belongs to and you must manually assign each
WWN or iSCSI name to a host. With Host Explorer agents running, the system automatically
groups WWNs or iSCSI names for the host together, assisting with creating the host.
The Host Explorer agent collects the following information and sends it to the system:
• Host operating system and version.
• Fibre Channel and iSCSI HBA details.
• Multipath driver and current multipath configuration.
• Cluster configuration information.
You can install the Host Explorer agent from the HP 3PAR Host Explorer CD. For instructions on
installing and using the Host Explorer agent, see the HP 3PAR Host Explorer User’s Guide. For a
list of supported host operating systems, go to the Single Point of Connectivity Knowledge (SPOCK)
website http://spock.corp.hp.com/index.aspx.
• To display the information returned by the Host Explorer agent to the system, issue the
showhost-agent or showhost-agent-d command.
Hosts and Virtual Domains
NOTE: Virtual domains requires the use of the HP 3PAR Virtual Domain Software license. Contact
your local HP representative for details.
If you are using virtual domains, you can create and modify domain-specific Fibre Channel or
iSCSI hosts. In many instances, you follow the same process for creating and modifying hosts just
as you would for hosts that do not use domains.
Creating a Domain-Specific Host
In order to create a domain-specific host, you must have Super or Edit rights in the all domain.
Refer to the HP 3PAR InForm OS Concepts Guide and the createhost command in the HP 3PAR
InForm OS Command Line Interface Reference for details about this restriction.
• To create a domain-specific host, issue the createhost command as described in
createhost “Creating a Host with a Fiber Channel Path” (page 71) and “Creating a Host
with an iSCSI Path” (page 71) with the -domain <domain_name>|set:<set_name>
option to specify the domain or domain set in which you are creating the host.
Modifying a Domain-Specific Host
Perform modifications to domain-specific hosts using the createhost and sethost commands
as previously discussed in “Modifying Hosts” (page 71).
Any existing domain-specific host can be modified as follows:
• By changing the host’s name. See “Changing a Host Name” (page 72) for instructions. You
must have Super or Edit rights in the all domain or Edit rights in a specified domain in
Hosts and Virtual Domains 79