HP Hitachi Dynamic Link Manager Software - Manual (Page 110)

3. Creating an HDLM Environment
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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
• 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
is
different for each type of storage system. 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 3-12: Formula for Calculating DISKTIMEOUT
For details on how to change
MISSCOUNT
and
DISKTIMEOUT
, contact the
company with which you have an Oracle Support Services contract.
Note that when you uninstall HDLM from the above configuration, you must
reset the values of
MISSCOUNT
and
DISKTIMEOUT
to their original values.
Storage system type Formula for obtaining the value of MISSCOUNT
• Lightning 9900 series
• Lightning 9900V series
• Hitachi USP
• Universal Storage Platform V/VM
• Virtual Storage Platform number-of-paths-connected-to-the-voting-disk x 60 seconds
• Hitachi AMS2000/AMS/WMS/SMS
series
• Thunder 9500V series
number-of-paths-connected-to-the-voting-disk x 30 seconds
Storage system type Number of
paths
connected
to the
voting disk
Formula for obtaining the value of
DISKTIMEOUT
• Lightning 9900 series
• Lightning 9900V series
• Hitachi USP
• Universal Storage Platform V/VM
• Virtual Storage Platform 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/TMS/WMS/
SMS 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