Software User Manual

Figure 5

Alternate path mode is Multi mode

NOTE:

In Multi

mode, active I/O load balancing occurs across external array ports and controllers. The XP

and EMC D

MX are examples of external arrays that use Multi mode.

• Alternate path mode is Single mode

Figure 6 shows an example of when the alternate path mode is Single mode. 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.

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.

External Storage XP user guide