Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy

3. The source virtual volumes in the Remote Copy volume group must be presented to all the
primary site nodes.
4. The destination virtual volumes in the Remote Copy volume group must be presented to all the
recovery site nodes.
5. All the virtual volumes used by the package must belong to exactly one Remote Copy volume
group.
Setting up the replication using 3PAR Remote Copy
Consider that you have already created one or more Serviceguard clusters for use in a disaster
recovery configuration.
To set up replication in a Metrocluster with 3PAR Remote Copy environment:
1. Connect the arrays to the hosts in the cluster.
2. Create a remote copy volume group for use in the cluster nodes.
3. Create a 3PAR storage system user to access the Remote Copy volume group.
4. Set up the SSH without a password from the cluster nodes to the HP 3PAR storage systems.
Connecting the arrays to the hosts in the cluster
Ensure that the 3PAR storage systems are correctly cabled to each host system that runs packages
whose data reside on the storage systems. You must create corresponding host definitions on each
storage system. For more information, see the 3PAR Management Console Online Help or the
3PAR CLI Administrator’s Manual available at: http://www.hp.com/go/saw or contact your HP
representative.
Create Remote Copy volume group
Before you create Remote Copy volume groups, you must create volumes on each storage system
separately through the normal volume creation commands. The volumes must be of the same size,
though they can have different RAID levels. In addition, they must be TPVVs or fully provisioned
virtual volumes.
NOTE: When a TPVV is configured as a primary volume in a Remote Copy volume group, no
data should be written on the secondary volume before adding it to the Remote Copy volume
group, or it must match the primary volume. This enables the primary and secondary volumes to
match during initial synchronization.
The Remote Copy volume group can be created either using HP 3PAR Management Console GUI
or HP 3PAR CLI commands using SSH. For better usability, configure Remote Copy volume group
using HP 3PAR Management Console GUI.
Using HP 3PAR Mmanagement console GUI
You can use the HP 3PAR Management Console graphical user interface to configure CPG, virtual
volumes, Remote Copy volume group. You can also export the created volumes to the respective
nodes in the cluster using HP 3PAR Management Console.
For more detailed information on setting up HP 3PAR Management Console to configure, manage,
and monitor your HP 3PAR storage system, see the HP 3PAR Management Console Online Help.
Using HP 3PAR CLI commands
To create the Remote Copy volume groups on the primary and backup storage systems:
1. Log on to a 3PAR storage system from the host. You must use user with super or edit privileges
who has access to all domains. If 3PAR CLI client is installed on your system, then use cli
command, otherwise use ssh command to connect to the storage.
When using SSH, run the following command:
14 Configuring an application in a Metrocluster environment