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(iSeries)

IBM i prerequisites

Before we install WebSphere Application Server, verify that your hardware and software meet the minimum requirements.


Hardware requirements

Overall system requirements vary based on actual workload requirements. Use IBM Systems Workload Estimator for sizing assistance.

Systems that do not meet the recommended minimums might be used in environments that support a limited number of users and where longer server initialization times are acceptable. The recommended hardware minimum requirements follow:

Minimum server requirements

  • Recommended minimum server models:

    • WebSphere requires a partition with a minimum of 600 CPW
    • WebSphere applications can benefit from the addition of an Accelerator Feature on models where this is available
    • Each active WebSphere profile requires a minimum of 1 GB of memory

  • Any partition running WAS should have a minimum of 2 GB of memory. This memory requirement is in addition to memory required for any other applications running on the IBM i server.

These requirements are based on a single WAS profile. Additional profiles running concurrently require additional resources.

These requirements represent the recommended minimum requirements. Deployments that must support many users or require shorter response times might require additional resources.

Disk requirements

Installation option Description Disk space after installation
WAS WAS run time 1400 MB
Application Server Samples Sample applications 110 MB
Application Client Client development and run time 330 MB
Web Server Plug-ins Web Server Plug-ins 140 MB


IBM i software requirements

The software required is as follows:

IBM i Version X Release Y (VXRY)

WAS is supported on IBM i v7 Release 1 (V7R1), v7 Release 2 (V7R2), and v7 Release 3 (V7R3). The IBM i server must be in an unrestricted state, and your user profile must have *ALLOBJ and *SECADM special authorities.

Java requirements

The following Java product is required to use or install WAS Version 9.0:

V7R1

V7R2

V7R3

IBM i Qshell (5770-SS1 option 30)

Required to run installation scripts and to use other scripts in WAS.

IBM i Extended Base Directory Support (5770-SS1 option 3)

Required for installation.

IBM i Portable Application Solutions Environment (5770-SS1 option 33)

Required to use Tivoli Performance Viewer.

IBM i Host Servers (5770-SS1 option 12)

Required for installation.

IBM i Digital Certificate Manager (5770-SS1 option 34)

Required for installation to use SSL protocol.


IBM i optional software

The optional software is as follows:

HTTP server

An HTTP server is not required for installation, but recommended for production environments that use servlets and JSP files. If we plan to deploy only enterprise beans, we do not need an HTTP server instance. WAS supports these HTTP server products:

  • IBM HTTP Server (powered by Apache) (5770-DG1)
  • Lotus Domino 8 for System i 8.0 (5733-LD8)
  • IBM Domino 8.5 for i (5733-L85)

DB2 Query Manager and SQL Development Kit for iSeries (5770-ST1)

The DB2 Query Manager and SQL Development Kit for iSeries help you develop client applications.

  • Prepare IBM i systems for installation