HP Hitachi Dynamic Link Manager Software User Manual
Page 99
3. Creating an HDLM Environment
77
Change the value of
MISSCOUNT
to the following value or greater:
(number-of-paths-connected-to-the-voting-disk
x
60 seconds).
If four or more paths are connected to a voting disk, change
DISKTIMEOUT
,
which is the I/O timeout threshold value for a voting disk, to the following
value or greater: (number-of-paths-connected-to-the-voting-disk
x
60
seconds).
• When using Oracle RAC 10g version 10.2.0.2.0 or later (when Sun Cluster
or Storage Foundation for Oracle RAC is used):
Change the value of
MISSCOUNT
to match the type of storage system. To do
so, use the following table to obtain the value to be specified, and then
change the current value to a value equal to or greater than the value you have
obtained.
Table 3-10: 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 to be specified in
DISKTIMEOUT
is determined by the type of storage system. To make the
change, use the following table to obtain the value to be specified, and then
change the current value to a value equal to or greater than the value you have
obtained.
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