Hp Hitachi Dynamic Link Manager Software Manual de usuario Pagina 288

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3. Creating an HDLM Environment
264
Table 3-55: 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.
Table 3-56: Formula for Calculating DISKTIMEOUT
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.
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/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
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