User`s guide

252 Implementing an Open IBM SAN
To activate our hard zone layout, we click Apply as illustrated in Figure 3-65.
Figure 3-65 IN-VSN: Applying a hard zone setup
As explained earlier, a director reconfiguration task such as this will affect
in-progress I/O. A warning message is issued to indicate this.
To activate our setup, we click Yes.
After this hard zone setup is activated, there is no communication possible
between the Finance zone and the Other zone.
This is the most secure way to separate nodes in a fabric environment.
3.4.6 Defining name server zones
Our goal is to enable all four HP servers to access the ESS.
To achieve a high level of availability, we have chosen to implement a
multipathing architecture except for one server (GEODE).