3.1 Preparing to install

Before you install JBoss Application Server on the computers of your cluster, ensure that your system meets the following configuration requirements:

Disk space: Ensure that the partition that will hold the application server has a minimum of 10 GB of free disk space. In addition to the space required to install the product, your environment variable TEMP or TMP must point to a valid temporary directory with at least 500 MB of free disk space. The downloadable executable requires approximately 500 MB, plus an additional 1.0 GB to unpack the images.

IP address settings: All the computers must have a fixed IP address that is managed through a single DNS.

IP multicast: All the computers must fully support IP multicast packet propagation, which means that all routers and other tunneling technologies must be configured to propagate multicast messages to clustered server instances. The network latency must be low enough to ensure that most multicast messages reach their final destination within 200 to 300 milliseconds. Also, the multicast time-to-live (TTL) value for the cluster must be high enough to ensure that routers do not discard multicast packets before they reach their final destination.

Versions: All the computers in the cluster must have the same version and same service pack of JBoss Application Server software.

Horizontal clustering: If your configuration is horizontally clustered (that is, instances of JBoss Application Server are installed on separate computers), ensure that all computers are on the same network subnet and that the computer clocks are synchronized. (See Preparing to Install AEM forms (Server Cluster).)

Account privileges: (Only for PDF Generator on Windows)You must install and run JBoss Application Server under a user account that has administrator privileges.

Shared network drive: You must have a secure shared network drive created that all computers in the cluster can access with read and write permissions. (See Preparing to Install AEM forms (Server Cluster) )

J2SE SDK version: For information on J2SE SDK version, see Supported Platform Combinations document.

Clocks of all the systems on the cluster might be synchronized to a common time server. In Windows domain, clock synchronization is done automatically. You must set-up Network Time Protocol on non-windows systems.

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