Editing Internet Storage Name Service (section)

=== Discovery domains and login control ===

Administrators can use the discovery domains to divide storage nodes into manageable, non-exclusive groups. By grouping storage nodes, administrators are able to limit the login process of each host to the most appropriate subset of targets registered with the iSNS, which allows the storage network to scale by reducing the number of unnecessary logins and by limiting the amount of time each host spends establishing login relationships.

Each target is able to use login control to delegate their access control and authorization policies to an iSNS server. Such delegation is intended to promote centralized management.