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Oracle Solaris Cluster Geographic Edition Data Replication Guide for EMC Symmetrix Remote Data Facility     Oracle Solaris Cluster 4.1
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Document Information

Preface

1.  Replicating Data With EMC Symmetrix Remote Data Facility Software

2.  Administering SRDF Protection Groups

Strategies for Creating SRDF Protection Groups

Creating a Protection Group While the Application Is Offline

Creating a Protection Group While the Application Is Online

Creating, Modifying, Validating, and Deleting an SRDF Protection Group

How to Create and Configure an SRDF Protection Group

Requirements to Support Oracle Real Application Clusters With Data Replication Software

How to Create a Protection Group for Oracle Real Application Clusters

How the Data Replication Subsystem Validates the Device Group

How to Modify an SRDF Protection Group

Validating an SRDF Protection Group

How to Validate an SRDF Protection Group

How to Delete an SRDF Protection Group

How to Create a Protection Group That Does Not Require Data Replication

Administering SRDF Application Resource Groups

How to Add an Application Resource Group to an SRDF Protection Group

How to Delete an Application Resource Group From an SRDF Protection Group

Administering SRDF Data Replication Device Groups

How to Add a Data Replication Device Group to an SRDF Protection Group

Validations Made by the Data Replication Subsystem

How the State of the SRDF Device Group Is Validated

Determining the State of an Individual SRDF Device Group

Determining the Aggregate SRDF Device Group State

Determining the SRDF Pair State

How to Modify an SRDF Data Replication Device Group

How to Delete a Data Replication Device Group From an SRDF Protection Group

Replicating the SRDF Protection Group Configuration to a Partner Cluster

How to Replicate the SRDF Protection Group Configuration to a Partner Cluster

Activating an SRDF Protection Group

How to Activate an SRDF Protection Group

Deactivating an SRDF Protection Group

How to Deactivate an SRDF Protection Group

Resynchronizing an SRDF Protection Group

How to Resynchronize a Protection Group

Checking the Runtime Status of SRDF Data Replication

Displaying an SRDF Runtime Status Overview

How to Check the Overall Runtime Status of Replication

Displaying a Detailed SRDF Runtime Status

3.  Migrating Services That Use SRDF Data Replication

A.  Geographic Edition Properties for SRDF

Index

Strategies for Creating SRDF Protection Groups

Before you begin creating protection groups, consider which of the following strategies is best for you:

The following sections describe the steps for each strategy:

Creating a Protection Group While the Application Is Offline

To create a protection group while the application resource groups is offline, complete the following steps.

  1. Create the protection group from a node on one cluster.

    For more information, see How to Create and Configure an SRDF Protection Group.

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

    For more information, see How to Add a Data Replication Device Group to an SRDF Protection Group.

  3. Take the application resource group offline.

  4. Add the application resource group to the protection group.

    For more information, see How to Add an Application Resource Group to an SRDF Protection Group.

  5. On the other cluster, retrieve the protection group configuration.

    For more information, see How to Replicate the SRDF Protection Group Configuration to a Partner Cluster.

  6. From either cluster, start the protection group globally.

    For more information, see How to Activate an SRDF Protection Group.

Creating a Protection Group While the Application Is Online

To add an existing application resource group to a new protection group without taking the application offline, complete the following steps on the cluster where the application resource group is online.

  1. Create the protection group from a cluster node.

    For more information, see How to Create and Configure an SRDF Protection Group.

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

    For more information, see How to Add a Data Replication Device Group to an SRDF Protection Group.

  3. Start the protection group locally.

    For more information, see How to Activate an SRDF Protection Group.

  4. Add the application resource group to the protection group.

    For more information, see How to Add an Application Resource Group to an SRDF Protection Group.

Complete the following steps on the other cluster.

Example 2-1 Creating an SRDF Protection Group While the Application Remains Online

This example creates a protection group without taking the application offline.

In this example, the apprg1 resource group is online on the cluster-paris cluster.

  1. Create the protection group on cluster-paris.

    phys-paris-1# geopg create -d srdf -p Cluster_dgs=dg1 \
    -o Primary -s paris-newyork-ps srdfpg
    Protection group "srdfpg" has been successfully created
  2. Add the device group, devgroup1, to the protection group.

    phys-paris-1# geopg add-device-group devgroup1 rdfpg
  3. Activate the protection group locally.

    phys-paris-1# geopg start -e local srdfpg
    Processing operation.... this may take a while...
    Protection group "srdfpg" successfully started.

    This command starts data replication.

  4. Add an application resource group that is already online to the protection group.

    phys-paris-1# geopg add-resource-group apprg1 srdfpg
    Following resource groups were successfully inserted:
                "apprg1"
  5. Verify that the application resource group was added successfully.

    phys-paris-1# geoadm list srdfpg
  6. On one node of the partner cluster, retrieve the protection group.

    phys-newyork-1# geopg get -s paris-newyork-ps srdfpg
    Protection group "srdfpg" has been successfully created.
  7. Activate the protection group locally on the partner cluster.

    phys-newyork-1# geopg start -e local srdfpg
    Processing operation.... this may take a while...
    Protection group "srdfpg" successfully started.
  8. Verify that the protection group was successfully created and activated.

    Running the geoadm status command on cluster-paris produces the following output:

    phys-paris-1# geoadm status
    Cluster: cluster-paris
    
       Partnership "paris-newyork-ps"        : OK
          Partner clusters                   : newyork
          Synchronization                    : OK
          ICRM Connection                    : OK
    
          Heartbeat "hb_cluster-paris~cluster-newyork" monitoring \
    "paris-newyork-ps": OK             
             Plug-in "ping-plugin"           : Inactive
             Plug-in "tcp_udp_plugin"        : OK
    
       Protection group "srdfpg"             : OK
          Partnership                        : paris-newyork-ps
          Synchronization                    : OK
    
          Cluster cluster-paris              : OK
             Role                            : Primary
             Configuration                   : OK
             Data replication                : OK
             Resource groups                 : OK
    
          Cluster cluster-newyork            : OK
             Role                            : Secondary
             Configuration                   : OK
             Data Replication                : OK
             Resource Groups                 : OK