IBM i prerequisites

Hardware requirements

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

• 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 WebSphere Application Server should have a minimum of 2 GB of memory. This memory requirement is in addition to memory required for any other applications running on your IBM i server.

  These requirements are based on a single WebSphere Application Server 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:

  Table 1. Disk requirements .

  This table describes WebSphere Application Server for IBM i disk requirements.

  Installation option	Description	Disk space after installation
  WebSphere Application Server	WebSphere Application Server run time	910 MB
  Application Server Samples	Sample applications	90 MB
  Application Client	Client development and run time	230 MB
  Web Server Plug-ins	Web Server Plug-ins	100 MB

IBM i software requirements

The software required is as follows:

• IBM i Version X Release Y (VXRY):

  WebSphere Application Server is supported on IBM i Version 7 Release 1 (V7R1) and Version 7 Release 2 (V7R2). The IBM i server must be in an unrestricted state, and your user profile must have *ALLOBJ and *SECADM special authorities.

• Java™ requirements:

  Starting in version 8.5.5.14, Java SE 8 is the default Java. When updating to 8.5.5.14, update all existing profiles that use Java SDK 6 to use Java SDK 8. You can continue to use Java SDK Java Technology Edition Version 7.0 and Version 7.1, but no service can be provided after the end of support in July 2022, which could expose your environment to security risks. For instructions on how to update your existing WebSphere Application Server profiles to use Java SE 8, follow the steps that are outlined in the IBM i documentation.

  The following Java product is required to use or install WebSphere Application Server Version 8.5:

  • V7R2:

    • Java SE 6 32 bit (5770-JV1 option 11)
  • V7R3:

    • Java SE 7 32 bit (5770-JV1 option 14)
  • V7R4:

    • Java SE 8 32 bit (5770-JV1 option 16)
    • Java SE 8 64 bit (5770-JV1 option 17)
• IBM i Qshell (5761-SS1, or 5770-SS1 option 30):

  Required to run installation scripts and to use other scripts in WebSphere Application Server.

• IBM i Extended Base Directory Support (5761-SS1, or 5770-SS1 option 3):

  Required for installation.

• IBM i Portable Application Solutions Environment (5761-SS1, or 5770-SS1 option 33):

  Required to use Tivoli® Performance Viewer. Required for Java SE 6 32 bit and Java SE 6 64 bit.

• IBM i Host Servers (5761-SS1, or 5770-SS1 option 12):

  Required for installation.

• IBM i Digital Certificate Manager (5761-SS1, or 5770-SS1 option 34):

  Required for installation to use Secure Sockets Layer (SSL) protocol.

• All necessary fixes:

  For a list of current fixes, see IBM i Support and click PTFs.

IBM i optional software

Next, see Workstation prerequisites.