Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP A.11.00

a. Configure the parameters for the Device Group Monitor in the package configuration
file.
Specify the polling interval for the DGM. If the parameter is not defined (commented out),
the default value is 10 minutes. Otherwise, the value will be set to the desired polling
interval in minutes.
MON_POLL_INTERVAL <polling interval in minutes>
Specify the value for MON_NOTIFICATION_FREQUENCY. This value is used to control
the frequency of notification message when the state of the device group remains the
same. If the value is zero, the monitor sends notification when the state of the device
group has changed. If the value is set to n where n is greater than 0, the monitor sends
a notification every nth polling interval or when the device group state has changed. If
the variable is not set, the default value is 0.
MON_NOTIFICATION_FREQUENCY <frequency of notification message>
If you want to receive notification messages over e-mail, specify the fully qualified e-mail
address. You can specify multiple e-mail address separated by a comma.
MON_NOTIFICATION_EMAIL <e-mail id>
If you want notification messages to be logged in the syslog file, uncomment the
MON_NOTIFICATION_SYSLOG variable and set it to 1. If the variable is not set, the
default value is 0.
MON_NOTIFICATION_SYSLOG <0 or 1>
If you want notification messages to be logged on the system's console, uncomment the
MON_NOTIFICATION_CONSOLE variable and set it to 1. If the variable is not set, the
default value is 0.
MON_NOTIFICATION_CONSOLE <0 or 1>
If you want an automatic resynchronization upon link recovery, uncomment the
AUTO_RESYNC variable and set it to either 1 or 2. If the variable is not defined or
commented, the default value of 0 is used.
If AUTO_RESYNC is set to 0 (DEFAULT), the monitor will not try to do the resynchronization
from PVOL to SVOL. This setting will only send notifications.
If AUTO_RESYNC is set to 1, the monitor will split the remote BC if one is configured
from the mirror group before trying to do the resynchronization from PVOL to SVOL.
If AUTO_RESYNC is set to 2, the monitor will only do the resynchronization from PVOL
to SVOL when it finds the MON_RESYNC file in the package directory on the node that
the package is running. The monitor will not manage the remote BC prior to and after
the resynchronization. This setting is used if the user wants to manage the BC themselves.
To enable the Continuous Access resynchronization for AUTO_RESYNC=2, it is necessary
to create a file using the HP-UX command touch. For example:
# touch <dts/dts/dts_pkg_dir>/MON_RESYNC <0 or 1 or 2>
If you want an automatic resynchronization for the Delta Resync pair if the
monitor detects that the data is not being replicated to DC3 over Continuous Access
Journal (CAJ) pair due to either link or storage failures, uncomment the
AUTO_DELTA_RESYNC variable and set it to 1. If the variable is not defined or
commented, the default will be 0.
AUTO_DELTA_RESYNC <0 0r 1>
122 Designing a Three Data Center Disaster Recovery Solution