Hitachi Dynamic Link Manager Software Users Guide for Windows

d. 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 or Windows
Server 2012, 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:
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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 following table to determine a value, and then change the
current value to a value equal to or greater than the value you have
determined.
Table 3-11 Formula for Calculating MISSCOUNT
Storage system type
Formula for obtaining the value of
MISSCOUNT
• Lightning 9900V series
• Hitachi USP series
• Universal Storage
Platform V/VM series
• Virtual Storage Platform
series
• VSP G1000 series
• HUS VM
number-of-paths-connected-to-the-voting-disk
x 60 seconds
• Hitachi
AMS2000/AMS/WMS/SMS
series
• HUS100 series
• Thunder 9500V series
number-of-paths-connected-to-the-voting-disk
x 30 seconds
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When using Oracle RAC 10g 10.2.0.2.0 or later or Oracle RAC 11g:
In addition to the value of MISSCOUNT shown above, also change the
value of DISKTIMEOUT. As with MISSCOUNT, the value of DISKTIMEOUT
3-22
Creating an HDLM Environment
Hitachi Dynamic Link Manager (for Windows®) User Guide