HP XP P9500 Storage - Manual (Page 99)

Table 3-16 Formula for Calculating DISKTIMEOUT
Storage system type
Number
of paths
connecte
d to the
voting
disk
Formula for obtaining the value of
DISKTIMEOUT
• Lightning 9900 series
• Lightning 9900V series
• Hitachi USP series
• Universal Storage
Platform V/VM series
• Virtual Storage Platform
series
• HUS VM
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
• Hitachi AMS2000/AMS/
WMS/SMS series
• HUS100 series
• Thunder 9500V series
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
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 remove 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
Creating an HDLM Environment
3-33
Hitachi Dynamic Link Manager User Guide for Solaris ®