HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

with an assigned host persona, see section “Creating a Host with an Assigned Host Persona”
(page 78).
NOTE: There should be at least two paths to each host to facilitate updates to the system. Failure
to create at least two host paths may result in unnecessary system downtime.
NOTE: See the HP 3PAR Implementation Guide for recommended practices and detailed
configuration information about using your specific host devices with the system.
Creating a Host with a Fiber Channel Path
To create a host with an FC path:
1. Determine the HBA’s WWN by issuing the showhost command.
2. Issue the createhost -persona <persona_number> <host_name> <WWN> command,
where:
• <persona_number> is the host persona number assigned to the host.
• <host_name> is the user-designated name of the host being defined.
• <WWN> is the HBA’s WWN.
If the Host Explorer agent is running on the host, the createhost <host_name> command
automatically creates a host with the path information received from the Host Explorer agent.
Creating a Host with an iSCSI Path
To create a host with an iSCSI path:
1. Determine the HBA’s iSCSI Name by issuing the showport -iscsiname command.
2. Issue the createhost -iscsi -persona <persona_number> <host_name>
<iSCSI_name> command, where:
• <persona_number> is the host persona number assigned to the host.
• <host_name> is the user-designated name of the host being defined.
• <iSCSI_Name> is the host iSCSI Name as determined from step 1 above.
If the Host Explorer agent is running on the host, the createhost -iscsi <host_name>
command automatically creates a host with the path information received from the Host Explorer
agent.
Creating a Host without Assigning a Path
In instances where the HBA’s Fibre Channel WWN or iSCSI Name is unavailable, you can create
a host as a placeholder until the path information becomes available. If the Host Explorer agent
is not running on the host, the createhost <host_name> command creates a host without any
path information. If the Host Explorer agent is running on the host, the createhost <host_name>
command automatically creates a host with the path information received from the Host Explorer
agent.
The host path information is required to display the device name. If the path information is not
reported from the host to the system, then the device name appears as Unknown.
• Issue the createhost <host_name> command, where <host_name> is the user-designated
name of the host being defined.
Modifying Hosts
You can modify the following parameters and functions of an existing host:
• Change the host’s name.
• Add or remove WWNs or iSCSI Names.
Modifying Hosts 71