122 Using XP12000 disk arrays with EVA GL disk arrays attached as subordinated external storage disk arrays
external port. Additionally, set Host OS to Microsoft Windows for the XP12000 to use the EVA LUs
correctly. Figure 56 illustrates this step.
Figure 56 Creating EVA host objects
After the host object is created, add the remaining XP12000 external ports by selecting the new host
object, and clicking the Ports tab. For each port, enter the world wide port name, and click Add Port.
Figure 57 illustrates this step.
Figure 57 Adding ports to XP12000 host objects
Creating and presenting EVA Vdisks
Vdisks created on the XP12000-attached EVA GL must have Path A Failover/Failback or Path B
Failover/Failback selected for Preferred path/mode. Figure 58 illustrates this step. Path A
Failover/Failback indicates that the given Vdisk is hosted from EVA Controller A and migrates via failover
function to Controller B if the need arises. To achieve better performance for a given configuration,
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