How to Add a Data Replication Device Group to a Sun StorageTek Availability Suite Protection Group

Before You Begin

A protection group is the container for the application resource groups, which contain data for services that are protected from disaster. Sun Cluster Geographic Edition software protects the data by replicating it from the primary cluster to the secondary cluster. By adding a Sun Cluster device group to a protection group, Sun Cluster Geographic Edition software monitors the replication status of all volumes in the device group that belong to a Sun StorageTek Availability Suite volume set. Sun Cluster Geographic Edition software also controls the role and state of the volume set during protection group operations like start, stop, switchover, and takeover.

Before you add a device group to a protection group, ensure that the following conditions are met:

• The protection group is defined on the local cluster.

• The protection group is offline on the local cluster and the partner cluster, if the partner cluster can be reached.

• The device group exists on both the local cluster and the partner cluster.

• The Nodelist property of the device group contains the same entries in identical order to the Nodelist property of the protection group.

• The Local_logical_host property specifies a valid hostname that can be hosted by the local cluster and that is reserved for this device group.

• The Remote_logical_host property specifies a valid hostname that can be hosted by the remote cluster and that has been reserved for this device group.

• If the Enable_volume_set property is set to true, then the /var/cluster/geo/avs/avsdg-volset.ini file must exist and contain valid entries on all nodes of both partner clusters. For information about configuring this file, see Enabling a Sun StorageTek Availability Suite Volume Set.

1. Log in to a cluster node.

   You must be assigned the Geo Management RBAC rights profile to complete this procedure. For more information about RBAC, see Sun Cluster Geographic Edition Software and RBAC in Sun Cluster Geographic Edition System Administration Guide.

2. Add a data replication device group to the protection group.

   This command adds a device group to a protection group on the local cluster and propagates the new configuration to the partner cluster if the partner cluster contains a protection group of the same name.

   # geopg add-device-group -p property [-p...] AVSdevicegroupname protectiongroupname

   -p property

   Specifies the properties of the data replication device group.

   You can specify the following Sun StorageTek Availability Suite properties:

   • Local_logical_host – Specifies the name of the local logical host that is used to replicate the device group.

   • Remote_logical_host – Specifies the name of the remote logical host that is used to replicate the device group.

   • Enable_volume_set – Specifies whether the volume sets in the file should be enabled automatically. Set to either True or False.

   For more information about the properties you can set, see Appendix A, Standard Sun Cluster Geographic Edition Properties, in Sun Cluster Geographic Edition System Administration Guide.

   AVSdevicegroupname

   Specifies the name of the new data replication device group.

   protectiongroupname

   Specifies the name of the protection group that will contain the new data replication device group.

   For information about the names and values that are supported by Sun Cluster Geographic Edition software, see Appendix B, Legal Names and Values of Sun Cluster Geographic Edition Entities, in Sun Cluster Geographic Edition System Administration Guide.

   For more information about the geopg command, refer to the geopg(1M) man page.

Example 2–9 Adding a Data Replication Device Group to a Sun StorageTek Availability Suite Protection Group

This example creates a Sun StorageTek Availability Suite data replication device group in the avspg protection group.

# geopg add-device-group -p Local_logical_host=lh-paris-1 \
-p Remote_logical_host=lh-newyork-1 avsdg avspg