User`s guide

Chapter 2. IBM TotalStorage Enterprise Storage Server configuration 123
Clicking on the host FC port icon also shows that the port would be able to
access volumes through each of the eight installed ESS FC ports if they were all
connected to the SAN and no zoning in the fabric would prevent them from
accessing the ESS FC ports.
This is illustrated in Figure 2-59, with lines drawn from the selected host FC port
to each installed ESS FC port. The involved components also get highlighted
yellow.
Figure 2-59 Selected host FC port, no ESS FC port restrictions
2.4.2 Modifying a host FC port definition
Each one of the settings that we applied before, for instance the nickname or the
WWPN, can be modified from within the Modify Host Systems panel.
We will now restrict the host FC port PC1_2 to the ESS FC port 3 in bay 1, as an
example of modifying the settings for host FC ports from within the Modify Host
Systems panel.
Restricting the ESS FC port access of host FC port PC1_2
To do this, we select the host FC port PC1_2 in the Host Systems List table, as
shown in Figure 2-60. This enables us to change the settings for this port in the
Host Attributes section.