Before you install WebSphere 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 WebSphere Application Server
software.
Horizontal clustering: If your configuration is horizontally
clustered (that is, instances of WebSphere 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 LiveCycle (Server Cluster).)
Account privileges: (Windows) You must install
and run WebSphere 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 LiveCycle (Server Cluster).)
