User's Guide

DC1_DC3_DEVICE_GROUP dg13
This is a phantom device group when using Multi-Hop Bi-Link configuration.
i. Specify the MU# used by the device group configured between DC1 and DC2
(DC1_DC2_DEVICE_GROUP) for the DC1_DC2_DEVICE_GROUP_MU parameter:
DC1_DC2_DEVICE_GROUP_MU <DG12_MU#>
j. Specify the MU# used by the device group configured between DC2 and DC3
(DC2_DC3_DEVICE_GROUP) for the DC2_DC3_DEVICE_GROUP_MU parameter:
DC2_DC3_DEVICE_GROUP_MU <DG23_MU#>
k. Specify the MU# used by the device group configured between DC1 and DC3
(DC1_DC3_DEVICE_GROUP) for the DC1_DC3_DEVICE_GROUP_MU parameter:
DC1_DC3_DEVICE_GROUP_MU <DG13_MU#>
l. Specify one of the following value for the FENCE parameter.
async value, if the Continuous Access journal pair is configured between DC1 and DC2.
never or data value, if the Continuous Access synchronous pair is configured between
DC1 and DC2:
FENCE <async or never or data>
m. Specify the RAID Manager instance number for the HORCMINST parameter:
HORCMINST 0
Besides these attributes, there are additional 3DC parameters available in the package
configuration file. It is recommended that the default values of the parameters that are
not listed here are retained unless there is a specific business requirement to change them.
For more information on the additional parameters available in the package configuration
file, see “Environment File Variables for Serviceguard Integration with Continuous Access
P9000 or XP” (page 475).
NOTE: It is highly recommended to configure Device Group Monitor. If you do not want
to configure Device Group Monitor, skip step 3.
3. If you want to monitor the status of the device group pairs, configure Device Group Monitor
(DGM). Otherwise, skip this step. To configure Device Group Monitor, the Serviceguard
module sg/service must be included while creating a primary package configuration file.
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.
Configuring an P9000 or XP 3DC DR Solution 443