To create a consistency group using RDF-ECA on the R1 side, use

# symcg create cgoradb -rdf_consistency -type rdf1

Replace rdf1 with rdf2 in the command to create the consistency group on the R2 side.

Use the same name on all nodes.

To use RDF-ECA, ensure that the RDF process daemon is running on any of the locally attached hosts. For redundancy, it is recommended that you run multiple instances of the RDF daemon on different hosts. For more information on configuring and using RDF-ECA, refer to EMC documentation web site.

2.Add each device that is going to be used in the consistency group. Use the appropriate SID numbers and device names for the data center that the node is a part of. For example, on node1 and node2 in Data Center A.

#symcg -cg cgoradb -sid 638 add dev 00C

#symcg -cg cgoradb -sid 638 add dev 00D

#symcg -cg cgoradb -sid 130 add dev 010

#symcg -cg cgoradb -sid 130 add dev 011

And on node3 and node4 in Data Center B.

#symcg -cg cgoradb -sid 021 add dev 018

#symcg -cg cgoradb -sid 021 add dev 019

#symcg -cg cgoradb -sid 363 add dev 050

#symcg -cg cgoradb -sid 363 add dev 051

3.Enable the consistency group.

#symcg -g cgoradb enable

NOTE: This important step must be carried out on every node.

4.Establish the BCV devices in the secondary Symmetrix as a mirror of the standard device. From either node3 or node4.

#symmir -cg cgoradb -full est

#symmir -cg cgoradb -full est

Alternatively, from either node1 or node2.

#symmir -cg cgoradb -full est -rdf

Creating Volume Groups

The following procedures assume the volume groups being created for a cluster and the device groups, as shown in Figure 47. Use the following steps on node1:

1.Create the physical volumes.

#pvcreate -f /dev/rdsk/c6t0d0

#pvcreate -f /dev/rdsk/c6t0d1

#pvcreate -f /dev/rdsk/c5t0d2

#pvcreate -f /dev/rdsk/c5t0d3

2.NOTE: If you are using the March 2008 version or later of HP-UX 11i v3, you can skip step2; vgcreate (1m) will create the device file for you.

Create the directories and special files for the volume groups.

#mkdir /dev/vgoraA

268 Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF