After you have set up your initial cluster or clusters, maintenance needs are minimal. Check your Windows Event log on a regular, if not daily, basis to monitor the activity of the nodes in the cluster. By checking the log, you will be informed that a node has failed and needs maintenance.
The following presents some situations that can occur over time that will affect the configuration or format of your cluster.
As your business grows or new equipment is added, you may find it advantageous to add an additional node to your cluster configuration. You would still want to do the initial planning to help save you time and ensure a successful implementation. In addition, proceed with the following steps:
The reason you might want to migrate an existing server into a cluster is probably the same as why you would a server to a cluster. More than likely you are looking to increase the availability and reliability of data to all your users. By having the server as part of the cluster, you provide an extra level of security by ensuring that no transactions will be missed due to a failed server. The failover pattern you establish prevents future failures.
To migrate an existing TSM server into a cluster, you can either move the clients or perform a backup and restore procedure. The choice depends primarily on the availability and capacity of other TSM server computers in your site and your familiarity with the backup and restore procedure.
If you move clients from a nonclustered TSM server computer to a clustered one, you can have the time to gradually migrate your users to the new system and not interrupt services. However, you must have the hardware needed to run two TSM servers simultaneously. You can move clients in either of the following ways:
If you have limited hardware resources, you can add an existing TSM server to a cluster by using the backup and restore procedure outline here. For example, suppose you have no hardware other than the two servers to be clustered and you plan to use the computer that is currently running the TSM server as a node. Follow this procedure to remove TSM from the computer and reinstall it in the cluster: