HP Hitachi Dynamic Link Manager Software - Manual (Page 181)

HiCommand ® Dynamic Link Manager (HDLM) for Windows ® Systems User’s Guide 165
5.3 Actions for a Path Error
When a path error is detected by HDLM, you must immediately resolve the error and restore
the path.
A check for path errors is performed whenever an I/O is issued, or the Windows Plug and
Play function detects that the paths are disconnected. If there are any paths through which
I/O is not normally issued, such as a non-owner path, you should enable path health
checking in order to detect errors regardless of I/O issuance. For details about path health
checking, see section 2.9.
When a path error is detected, HDLM performs failover for the path and outputs the
KAPL08022-E message. This message indicates that an error has occurred in the components
that make up the path. Figure 5.1 shows these components.
Figure 5.1 Error Location when KAPL08022-E Message is Output
Figure 5.2 shows the troubleshooting procedure when a path error occurs.