HP XP7 Storage - Manual (Page 188)

The name of the host device.
A drive letter is used. If no drive letter has been assigned, a hyphen (-)
will be displayed.
This is the same as the HDevName that is displayed by the view operation.
For details on the view operation, see view (Displays Information) on
page 6-33 .
What To Do for a Path Error
When a path error is detected by HDLM, you must immediately resolve the
error and restore the path.
A path error check is performed every time an I/O is issued, or the Windows
plug-and-play functionality detects that a path is disconnected. If there are
any paths through which I/Os are not normally issued, such as a non-owner
path, you should enable path health checking in order to detect any possible
errors. For details about path health checking, see Detecting Errors by Using
Path Health Checking on page 2-31 .
When a path error is detected, HDLM performs a failover on the path and
outputs the KAPL08022-E message. This message indicates that an error has
occurred in the components, shown in the following figure, that make up the
path.
Figure 5-1 Error Location When the KAPL08022-E Message Is Output
The following figure shows the troubleshooting procedure when the
KAPL08022-E message is output.
5-4
Troubleshooting
Hitachi Dynamic Link Manager (for Windows®) User Guide