Configuring memory-to-memory replication for the client/server function using remote replicators

Why and when to perform this task

To configure the session management facility for memory-to-memory replication for clients and servers with remote replicators, complete the following steps:

Steps for this task

  1. Create an application cluster.
    This cluster is used to deploy the application.
    1. Go to the Server Cluster page. Click Servers > Clusters.
    2. Click New.
    3. Type a cluster name for this application cluster.
    4. Click Next.
    5. Define each cluster member server. Type a cluster member name.
    6. Click Apply.
      Complete steps e and f for each server created in this cluster.
    7. Click Next and review the summary of changes.
    8. Click Finish to complete the configuration.
    Do not create a replication domain or replicators on the member server for the application cluster.
    You have now created a cluster that contains the replication domain.
  2. Create a cluster of session manager replication servers (backup cluster).
    1. Go to the Server Cluster page. Click Servers > Clusters.
    2. Click New.
    3. Type a cluster name for the cluster of session manager replication servers.
    4. Define a replication domain. Select the Create Replication Domain for this cluster check box.
    5. Click Next.
    6. Define each cluster member server. Type a cluster member name.
    7. Define a replicator on each cluster member server. Select the Create Replication Entry in this Server check box.
    8. Click Apply.
      Complete steps f through h for each server created in this cluster.
    9. Click Next and review the summary of changes.
    10. Click Finish to complete the configuration.
    This step creates a cluster of session manager replication servers and associates a replication domain with that cluster. This step also creates a replicator on each cluster member server.
  3. Enable memory-to-memory session replication for each cluster member server in the application cluster.
    1. Go to the appropriate level of session management for the Web container level. Click Application Server > application_cluster_member_server > Web Container > Session Management.
    2. Click Distributed Environment Settings under Additional Properties.
    3. If a replicator is already created and is associated with this or another server, selectMemory to Memory Replication.
      If no replicator has been created for any server, a note appears. In this case, click Memory to Memory Replication. The Internal Replication Domain panels appear. These panels lead you through the process of creating a replication domain and a replicator. After you create a replication domain and a replicator, begin again with step 2a.
    4. Click Apply.
    5. Repeat these steps for each server. Click OK.
    This step points the servers to the replicator of your choice.
  4. If you want to change the tuning parameters, click Custom Tuning Parameters and select a setting or customize one.

    Note: Using the default tuning parameter custom settings, which specifies time based write interval of 10 seconds, may result in data loss when an application server in your cluster fails. However, this is just a small opportunity for lost data when compared to the significant improvement in performance.

    1. Select the replication domain
    2. Select the replicator to which the member server connects.
    3. Ensure that the member server node is client-only. Verify that the remainder of the member servers are in client-only mode.
    4. Click Apply.
    5. Click Save.

Related concepts
Memory-to-memory topology: Peer-to-peer function with a local replicator
Memory-to-memory topology: Peer-to-peer function with remote/isolated replicators
Memory-to-memory topology: Client/server function with isolated replicators
Memory-to-memory topology: Client/server function with remote replicators
Related tasks
Configuring memory-to-memory replication for the peer-to-peer function with a local replicator (default memory-to-memory replication)
Configuring memory-to-memory replication for peer-to-peer functions with remote/isolated replicators
Configuring memory-to-memory replication for the client/server function using isolated replicators



Searchable topic ID:   tprsconfigcsremote
Last updated: Jun 21, 2007 4:55:42 PM CDT    WebSphere Application Server Network Deployment, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/tprs_config_cs_remote.html

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