HP StorageWorks XP Remote Web Console Software - Manual (Page 16)

16 External Storage XP for the XP10000/XP12000
NOTE: As you restore the path with a priority higher than the current path, the I/O execution path
automatically switches to the restored path with the highest priority.
Figure 6 Alternate path mode is Single mode
Alternate path mode is Single mode and at least one alternate path is in Standby status
Figure 7 shows an example of when the alternate path mode is Single mode and there are alternate paths
in Normal and Standby status. Figure 8 shows another example of when the alternate path mode is Single
mode. In Figure 8 , there are only alternate paths in Standby status.
When an error occurs in the path used for I/Os, the I/O execution path switches to the path with the
second highest priority in Normal status (see Figure 7 ). If there is no path in Normal status other than the
path used for I/Os, the status of the path in Standby status automatically changes to Normal and the I/O
execution path switches to that path (see Figure 8 ).