HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 LUN Manager and Volume Manager (T1714-96015, October 2007)

The host connects to the array without authentication of the host regardless of whether or not the host
is congured for authentication by host groups with CHAP.
In this case, although you do not need to register the host's user information on the host group,
you can register the user information.
NOTE:
You should register the user information for all hosts to be connected to a host group that performs
authentication of hosts. To allow a specichosttoconnecttosuchahostgroupwithoutauthentication,
congure the host group and the host as follows:
On the host group:
Register the user information of the host you want to allow to connect without authentication, and then
disable the host authentication setting.
Figure 10 shows an example of authentication of hosts. In this gure, WWNs of host bus adapters (HBAs)
are abbreviated as a, b, and so on.
Figure 10 Example of authentication of hosts (Fibre Channel environments)
In Figure 10,hostgroup1performsauthenticationofhosts,buthostgroup2doesnot.
Host A's user information is registered on host group 1, and the authentication setting is enabled.
Therefore, if the authentication of the host succeeds, Host A can connect to the array (or processing
goes to the authentication of the host group). As a precondition of successful authentication, congure
Host A for authentication by host groups with CHAP.
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Overview of LUN Manager