Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Metropolitan Cluster Using MetroCluster/SRDF
Setting up M by N Configurations
Chapter 4160
The following examples are based on the 2 by 2 configuration shown in
Figure 4-19.
Create device groups using the following commands on each node on the
R1 side:
# symdg -type RDF1 create dgoraA
# symdg -type RDF1 create dgoraB
For each node on the R2 side (node3 and node4), create the device groups
as follows. Note that you have to create two device groups because device
groups do not span frames. Do the following on each node on the R2 side:
# symdg -type RDF2 create dgoraA
# symdg -type RDF2 create dgoraB
For each node on the R1 side (node1 and node2), assign the R1 devices to
the device groups as follows:
# symld -sid 638 -g dgoraA add dev 00C
# symld -sid 638 -g dgoraA add dev 00D
# symld -sid 130 -g dgoraB add dev 010
# symld -sid 130 -g dgoraB add dev 011
For each node on the R2 side (node3 and node4), assign the R2 devices to
the device groups as follows:
# 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
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