HP XP External Storage Software - Manual (Page 25)

Figure 7 Example of Unavailable Alternate Path Setting
Examples of Switching I/O Execution Paths to Alternate Paths
This section describes the case examples of the performance when the I/O execution path is switched to
the alternate path for each path mode as follows:
• When the path mode is Multi mode.
• When the path mode is Single mode.
• When the path mode is Single mode and there is at least one alternate path in the Standby status.
For the description about the path status, see “ Mapping Path Information Dialog Box ” on page 84.
• When the path mode is Multi mode
Figure 8 on page 26 shows an example of the case when the path mode is Multi mode. When
an error occurs in one path, I/Os are executed using the paths other than the error path.
Note: As you restore the error path, the use of the restored path is automatically resumed.
XP24000 External Storage Software User’s Guide 25