HP StorageWorks XP10000 Disk Array - Manual (Page 45)

• Whether to register iSCSI ports in iSNS servers: The iSNS server is a server computer on which
an iSNS service is installed. iSNS is an acronym for Internet Storage Name Service. This server
manages IP addresses and iSCSI names of iSCSI ports. Using iSNS servers is optional. If you
configure and use iSNS servers, iSCSI ports are easily discovered and managed.
NOTE:
For more information about configuring iSNS servers, see the iSNS-related documentation.
• iSNS server's IP address: To use an iSNS server, you must specify the iSNS server's IP address.
• iSNS server's TCP port number: To use an iSNS server, you must specify the iSNS server's TCP
port number.
NOTE:
Specify 3205 as the TCP port number if you use Microsoft® iSNS Server as the iSNS server. If you
specify other than 3205, you cannot register iSCSI ports in the iSNS server.
Status of connections between hosts and the array
Use LUN Manager to issue a ping command from an array iSCSI port to a host. The ping command
checks whether the host and array can communicate with each other. If the host responds to the ping
command, the host and array can communicate with each other. For more information, see Checking the
status of the connection between hosts and the array (iSCSI environments only) .
User authentication (Fibre Channel environments)
When configuring Fibre Channel environments, you can use LUN Manager to set user authentication
between the array's ports and hosts. In Fibre Channel environments, ports and hosts use Null
DH-CHAP (Challenge Handshake Authentication Protocol with a Null Diffie-Hellmann algorithm) as the
authentication method. This section provides an overview of user authentication.
NOTE:
Throughout this user guide, Null DH-CHAP is sometimes referred to as CHAP.
User authentication operations and settings
User authentication operations in Fibre Channel environments contain the following phases:
1. A host group of the array authenticates a host attempting to connect (authentication of hosts).
2. The host authenticates the connection-target host group of the array (authentication of host groups).
CAUTION:
Because host bus adapters currently do not support this function, this authentication phase
is not used in Fibre Channel environments.
3. A target port of the array authenticates a Fibre Channel switch attempting to connect (authentication
of Fibre Channel switches).
The array performs user authentication by host groups. Therefore, host groups and hosts must have their
own user information for performing user authentication.
When a host attempts to connect to the array, the authentication of hosts phase starts. In this phase,
it is determined whether the host group requires authentication of the host. If the host group does not
require authentication of the host, the host connects to the array without authentication. If the host group
HP StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000/SVS200
45