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

2 Configuring an application in a Metrocluster environment

Installing the necessary software

Before a Metrocluster can be configured, make sure the following software is installed on all nodes:

• Serviceguard

• Metrocluster with 3PAR Remote Copy

• MCDR Enabler Toolkit

For more information on the software, see the Metrocluster with 3PAR Remote Copy Release Notes

and Serviceguard Disaster Recovery Products Compatibility and Feature Matrix (Metrocluster with

3PAR Remote Copy) available at http://www.hp.com/go/hpux-serviceguard-docs -> HP

Metrocluster with 3PAR Remote Copy.

Creating the cluster

Create the cluster or clusters according to the process described in the Managing Serviceguard

manual available at http://www.hp.com/go/hpux-serviceguard-docs. In the case of a Metrocluster,

create a single Serviceguard cluster with components on multiple sites.

NOTE: Do not configure a 3PAR Remote Volume group volume, Primary or Secondary, as a

cluster lock disk. A cluster lock disk must always be writable. The volumes of a Remote Copy volume

group might not always be writable, therefore none of them can be used as a cluster lock disk. A

configuration with a cluster lock disk that is part of a remote copy volume group is not a supported

configuration.

Site Aware failover configuration

To use either of these package failover policies : site_preferred_manual or

site_preferred, the underlying cluster must be configured with sites and each cluster node

must be associated to a site. The Serviceguard cluster configuration file includes the following

attributes to define sites:

Table 1 Serviceguard cluster configuration file attributes

DefinitionAttributes

To define a unique name for a site in the cluster.SITE_NAME

To associate a node to a site, specify the site name using the SITE keyword

under the node's NODE_NAME definition.

SITE

The following is a sample of the site definition in a Serviceguard cluster configuration file:

SITE_NAME san_francisco

SITE_NAME san_jose

NODE_NAME SFO_1

SITE san_francisco

.....

NODE_NAME SFO_2

SITE san_francisco

........

NODE_NAME SJC_1

SITE san_jose

.......

NODE_NAME SJC_2

SITE san_jose

........

Installing the necessary software 11