Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF

4. For each node on the R2 side (node3 and node4), assign the R2 devices to the device groups.
# symld -sid 021 -g dgoraA add dev 018
# symld -sid 021 -g dgoraA add dev 019
# symld -sid 363 -g dgoraB add dev 050
# symld -sid 363 -g dgoraB add dev 051
5. On each node on the R2 side (node3 and node4), associate the local BCV devices to the
R2 device group.
# symbcv -g dgoraA add dev 01A
# symbcv -g dgoraA add dev 01B
# symbcv -d dgoraB add dev 052
# symbcv -d dgoraB add dev 053
6. To manage the BCV devices from the R1 side, it is necessary to associate the BCV devices
with the device groups that are configured on the R1 side. Use the following commands on
hosts that are directly connected to the R1 Symmetrix.
# symbcv -g dgoraA associate dev 01A -rdf
# symbcv -g dgoraA associate dev 01B -rdf
# symbcv -g dgoraB associate dev 052 -rdf
# symbcv -g dgoraB associate dev 053 -rdf
7. Establish the BCV devices using the following commands in the nodes on the R2 side.
symmir -g dgoraA -full est
symmir -g dgoraB -full est
8. Alternatively, establish the BCV devices with the following commands on the nodes in the R1
side.
# symmir -g dgoraA -full est -rdf
# symmir -g dgoraB -full est -rdf
Configuring gatekeeper devices
It is necessary to have a gatekeeper device for each device group in the consistency group that
will be built in a later step. Use the following commands on all the nodes on the R1 side to define
gatekeepers and associate them with device groups.
# symgate -sid 638 define dev 010
# symgate -sid 130 define dev 009
# symgate -sid 638 -g dgoraA associate dev 010
# symgate -sid 130 -g dgoraB associate dev 009
Use the following commands on all the nodes on the R2 side to define gatekeepers and associate
them with device groups.
# symgate -sid 021 define dev 002
# symgate -sid 363 define dev 00B
# symgate -sid 021 -g dgoraA associate dev 002
# symgate -sid 363 -g dgoraB associate dev 00B
Creating the consistency groups
To configure consistency groups for using Metrocluster with EMC SRDF, first create device groups
and gatekeeper groups as described in “Configuring gatekeeper devices” (page 23).
Setting up M by N configurations 23