Single path mode

For Single path mode, the external path with the highest priority (primary path) is used to execute I/O to the external volume. If the primary path cannot be used, it is switched to an alternative path, after a 3-minute period.

The following figure illustrates how failure is handled with redundant paths in Single path mode.

When you restore a path with higher priority than the currently-used path, I/O is switched to the restored path.