Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

To migrate the role of new primary site back to the original primary site

Make sure that all CRS resources are online, and switch back the group

database_grp to the original primary site.

Issue the following command on the remote site:

# hagrp -offline database_grp -any

Verify that the RLINK between the primary and secondary is up to date. Use

the vxrlink -g command with the status option and specify the RLINK for

the primary cluster. You can use the command from any node on the primary

cluster.

For example:

# vxrlink -g data_disk_group status rlk_clus1_priv_rac1_rvg

Where rlk_clus1_priv_rac1_rvg is the RLINK.

Make sure that database_grp is offline on the new primary site. Then, execute

the following command on the original primary site to bring the database_grp

online:

# hagrp -online database_grp -any

Taking over the primary role by the remote cluster

Takeover occurs when the remote cluster on the secondary site starts the

application that uses replicated data. This situation may occur if the secondary

site perceives the primary site as dead, or when the primary site becomes

inaccessible (perhaps for a known reason). For a detailed description of concepts

of taking over the primary role:

See the Veritas Volume Replicator Administrator’s Guide.

Before enabling the secondary site to take over the primary role, the administrator

on the secondary site must "declare" the type of failure at the remote (primary,

in this case) site and designate the failure type using one of the options for the

haclus command.

Takeover options are:

■ Disaster

■ Outage

Configuring a global cluster using VVR

Using VVR commands on SFCFS global clusters

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