HP XP External Storage Software - Manual (Page 22)

Figure 8 When the Path Mode is Multi Mode
•
When the path mode is Single mode
Figure 9 (page 23) shows an example of when the path mode is Single mode. When an error
occurs in the path that is being used for I/Os, the I/O execution path is switched to the path
with the second highest priority.
As you restore the path with the priority higher than the currently used path, the I/O execution
path is automatically switched to the restored path that has the highest priority.
22 About XP External Storage Operations