Hitachi XP P9500 User Manual page 93

Table 3-14 Formula for Calculating DISKTIMEOUT
Storage system type
• Lightning 9900 series
• Lightning 9900V series
• Hitachi USP
• Universal Storage
Platform V/VM
• Virtual Storage Platform
• Hitachi AMS2000/AMS/
WMS/SMS series
• Thunder 9500V series
For details on how to change MISSCOUNT and DISKTIMEOUT, contact
the company with which you have a contract for Oracle Support
Services.
Note that when you uninstall HDLM from the above configuration, you
must reset the values of MISSCOUNT and DISKTIMEOUT to their original
values. Therefore, make a note of the original values of MISSCOUNT
and DISKTIMEOUT before changing them.
• In Oracle RAC 11g, for the following devices, device name should be
matching between the nodes:
voting disk
¢
Oracle Cluster Registry
¢
Oracle database file
¢
system table area
¢
users table area
¢
ASM disk to be used for ASM disk group creation
¢
In an environment where an HDLM raw device is used as the devices
listed above, if the HDLM raw device name does not match between the
nodes, create an alias device file of the HDLM raw device in each node by
using the following procedure and set the created alias device file in
Oracle RAC 11g.
a Check the major number and minor number of HDLM raw devices
.
used by Oracle RAC 11g by executing the following command in each
node:
# ls -lL HDLM-raw-device-file
Execution example:
# ls -lL /dev/rdsk/c10t50060E8005271760d5s0
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for Solaris(R))
Number
of paths
connecte Formula for obtaining the value of
d to the DISKTIMEOUT
voting
disk
3 or less You do not need to change the value
of DISKTIMEOUT.
4 or more number-of-paths-connected-to-the-
voting-disk x 60 seconds
6 or less You do not need to change the value
of DISKTIMEOUT.
7 or more number-of-paths-connected-to-the-
voting-disk x 30 seconds
3-29