User`s guide

152 Implementing an Open IBM SAN
Removing the assignments of one ESS logical volume
First as we did in, “Selecting ESS logical volume assignments for modification”
on page 144, we select the volume assignments for both host FC ports. Then,
when the Action field becomes available, we select the radio button to Unassign
selected volume(s) from target hosts, which means, remove selected ESS
logical volume assignments for the selected host FC ports. The Target Hosts field
now lists the host FC ports to which the assignments belong to. Here we select
both host FC ports to remove the assignments. This is shown in Figure 2-101.
Figure 2-101 Removing volume assignments from both host FC ports.
Doing so makes the warning message shown in Figure 2-102 appear, stating that
this action will cause ESS logical volumes to become isolated for the selected
host FC port.
Figure 2-102 Warning window one, volumes to be isolated from host FC ports
After pressing the Perform Configuration Update button, a second warning
window will show up as shown in Figure 2-103. This time, the window gives us
the choice to abort the configuration update.