HP Hitachi Dynamic Link Manager Software User Manual

Page 109

3. Creating an HDLM Environment

following procedure to delete the two

oem

.inf

files and two

oem

.pnf

files:

Check the MPIO driver version indicated in the KAPL09257-W or the

KAPL09258-E message.
In this example, the MPIO driver version is n.nn.nnnn.nnnn (n represents

numbers):

KAPL09257-W HDLM cannot be installed on a system where

MPIO

nnnn

has already been installed.

Find the setup information files (which have the file extension

inf

) that

contain the version number information, by using the Windows search

function in the following folder:
Windows-installation-folder

\inf

There will be two

oem

.inf

files.

Make sure that the contents of the

oem

.inf

files you have found are

identical to the files

mpio.inf

and

mpdev.inf

for the MPIO driver that is

installed on the host.
If you have uninstalled HDLM and then install an earlier version of HDLM,

check the

mpio.inf

and

mpdev.inf

files on the DVD for the later version

of HDLM.

Delete the setup information files from the following folder:
Windows-installation-folder

\inf

If there are any files whose names are the same as the setup information files

but have the extension

pnf

, you also need to delete these files.

Note that we strongly recommend that, before deleting any setup information

files, you first back up the files and store the backup files in a different folder.

• If you are installing HDLM on Windows Server 2008, do not delete the

multi-path I/O feature from the Server Manager.

When a host is connected to an Oracle RAC voting disk via multiple paths, if an

I/O timeout occurs for any one of these paths, HDLM will perform a failover.
Note that, depending on the Oracle RAC settings, Oracle RAC might determine

that a node error has occurred before the failover has completed, upon which it

will re-configure the cluster.
If HDLM is managing the paths that are connected to an Oracle RAC voting disk,

change the following settings to be compatible with your version of Oracle RAC:

• When using Oracle RAC 10g 10.1.0.3.0 or later or Oracle RAC 11g:

Change the value of

MISSCOUNT

to match the storage system type. Use the