Environment File Variables for Serviceguard Integration with Continuous Access XP
Appendix A 425
In asynchronous mode, when there is an Continuous
Access link failure, both the PVOL and SVOL sides
change to a PSUE state. However, this change will not
take place until the Continuous Access link timeout
value, configured in the Service Processor (SVP), has
been reached. If the horctakeover command is issued
during this timeout period, the horctakeover command
could fail if its timeout value is less than that of the
Continuous Access link timeout. Therefore, it is
important to set the HORCTIMEOUT variable to a value
greater than the Continuous Access link timeout value.
The default Continuous Access link timeout value is 5
minutes (300 seconds). A suggested value for
HORCTIMEOUT is 360 seconds.
During package startup, the default startup timeout
value of the package is set to NO_TIMEOUT in the
package ASCII file. However, if there is a need to set a
startup timeout value, then the package startup
timeout value must be greater than the HORCTIMEOUT
value, which is greater than the Continuous Access
link timeout value:
Pkg Startup Timeout > HORCTIMEOUT > Continuous
Access link timeout value
For Continuous Access Journal mode package, journal
volumes in PVOL may contain a significant amount of
journal data to be transferred to SVOL. Also, the
package startup time may increase significantly when
the package fails over and waits for all of the journal
data to be flushed. The HORCTIMEOUT should be set long
enough to accommodate the outstanding data transfer
from PVOL to SVOL.
MULTIPLE_PVOL_OR_SVOL_FRAME_FOR_PKG (Default=0)
This parameter must be set to 1 if a PVOL or an SVOL
for this package resides on more than one XP frame.
Currently, only a value of 0 is supported for this
parameter.