HP XP7 Storage - Manual (Page 53)

The dynamic I/O path control function can be enabled or disabled based on
each host, connected storage system, or LU.
The dynamic I/O path control function can be specified by using the HDLM
command's set operation. For details about the set operation, see set (Sets
Up the Operating Environment) on page 6-16 .
Dynamic Re-configuration
Utilizing the Windows plug-and-play functionality, you can add or delete an
LU or a path while the host (on which HDLM is installed) is still running. This
is called the dynamic re-configuration function. For details on the dynamic re-
configuration function, see Setting Up an Added LU and Path as an HDLM
Management-target on page 4-16 .
Adding an LU Dynamically
The function to dynamically add an LU enables you to add an LU or a path
while a host (on which HDLM is installed) is running.
For details on the LU dynamic addition function, see Setting Up an Added LU
and Path as an HDLM Management-target on page 4-16 .
Deleting an LU Dynamically
The dynamic LU deletion function automatically removes an LU from under
HDLM control when all the paths to that LU have been disconnected.
You can use the dynamic LU deletion function by specifying the dlnkmgr
command's set operation together with the -rmlu on parameter. You can
also use this function from the Options window of the HDLM GUI. For details
on the set operation, see set (Sets Up the Operating Environment) on page
6-16 . For details on the operation of the Options window, see the HDLM GUI
Help.
For details on dynamically deleting an LU, see Deleting an LU Dynamically on
page 4-19 .
Error Management
For troubleshooting purposes, HDLM collects information and stores it into log
files. The error information to be collected can be filtered out by error level,
and then stored into the log files.
The following figure shows the flow of data when error information is
collected on a host which is running HDLM .
HDLM Functions
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Hitachi Dynamic Link Manager (for Windows®) User Guide