Configuring Isns Discovery Domains; Creating Isns Discovery Domains; Section 12.3, "Configuring Isns Discovery Domains - Novell LINUX ENTERPRISE SERVER 11 - STORAGE ADMINISTRATION GUIDE 2-23-2010 Administration Manual

12.3 Configuring iSNS Discovery Domains

In order for iSCSI initiators and targets to use the iSNS service, they must belong to a discovery
domain.
IMPORTANT: The SNS service must be installed and running to configure iSNS discovery
domains. For information, see
Section 12.3.1, "Creating iSNS Discovery Domains," on page 112
Section 12.3.2, "Creating iSNS Discovery Domain Sets," on page 113
Section 12.3.3, "Adding iSCSI Nodes to a Discovery Domain," on page 114
Section 12.3.4, "Adding Discovery Domains to a Discovery Domain Set," on page 115

12.3.1 Creating iSNS Discovery Domains

A default discovery domain named default DD is automatically created when you install the iSNS
service. The existing iSCSI targets and initiators that have been configured to use iSNS are
automatically added to the default discovery domain.
To create a new discovery domain:
1 Start YaST and under Network Services, select iSNS Server.
2 Click the Discovery Domains tab.
The Discovery Domains area lists all discovery domains. You can create new discovery
domains, or delete existing ones.Deleting a domain removes the members from the domain, but
it does not delete the iSCSI node members.
The Discovery Domain Members area lists all iSCSI nodes assigned to a selected discovery
domain. Selecting a different discovery domain refreshes the list with members from that
discovery domain. You can add and delete iSCSI nodes from a selected discovery domain.
Deleting an iSCSI node removes it from the domain, but it does not delete the iSCSI node.
Creating an iSCSI node allows a node that is not yet registered to be added as a member of the
discovery domain. When the iSCSI initiator or target registers this node, then it becomes part of
this domain.
When an iSCSI initiator performs a discovery request, the iSNS service returns all iSCSI node
targets that are members of the same discovery domain.
112 SLES 11: Storage Administration Guide
Section 12.4, "Starting iSNS," on page 116.