Hitachi Dynamic Link Manager Software Users Guide for Linux

Table 3-76 Formula for Calculating DISKTIMEOUT
Storage system
type
Number of paths
connected to the
voting disk
Formula for obtaining the value of
DISKTIMEOUT
• Lightning
9900V series
• Hitachi USP
series
• Universal
Storage
Platform
V/VM series
• Virtual
Storage
Platform
series
• VSP G1000
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/AM
S/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.
• If the Oracle command oracleasm is executed for HDLM devices, the
KAPL05023-E message might be output to syslog.
If the following message indicating the successful completion of the
oracleasm command is output after this message, there is no problem
with HDLM operation.
oracleasm: succeeded
• If you use HDLM with Oracle RAC 10g or Oracle RAC 11g and use ASMLib
of Oracle RAC 10g or Oracle RAC 11g, you must change the settings for
the ASMLib configuration file.
After installing ASMLib, do the following for each node:
a. Execute the following command to create the ASMLib configuration
file:
Creating an HDLM Environment
3-185
Hitachi Dynamic Link Manager (for Linux®) User Guide