Migrating side-by-side versions of InfoSphere Information Server (Linux and UNIX only)

If your engine tier is on a Linux® or UNIX computer, you can keep that instance and also install InfoSphere® Information Server, Version 11.7 on the same computer. You can also install multiple InfoSphere Information Server engine tiers on different computers and have them all registered with one InfoSphere Information Server services tier.

Each engine tier that is installed on the same computer must be registered to a different instance of the InfoSphere Information Server services tier.

If you maintain different releases of various engine tiers, or multiple instances of the same engine tier, you can keep all of those instances.

Each instance of an engine tier is identified by a tag ID (an ITAG) and allocated a different port. You must specify a different installation directory for each engine tier. Each engine tier has a different set of InfoSphere DataStage® projects that you access through that server. You connect to different servers by specifying the port number in addition to the UNIX server ID.

The existing engine tier instance retains the default port number, 31538, and uses the default ITAG, ADE. If you already have multiple server instances, then you already have servers that use different ports and ITAGs.

Each version of DataStage requires clients of the same version. You must use the Multi-Client Manager program to switch between different client versions on your Windows client computers.

The following table shows a scenario of a multi-server installation, and illustrates the use of port numbers and ITAGs.
Table 1. Scenario 1: Engine tier for InfoSphere Information Server, Version 11.7 server installed on the same computer as an existing DataStage 7.5.1 server
Engine tier instance Server details
InfoSphere Information Server, Version 11.7 engine tier
  • Itag 123
  • Port 31540
  • /opt/IBM/InformationServer/Server
The following table shows a scenario of a multi-server installation with three servers, and illustrates the use of port numbers and ITAGs.
Table 2. Scenario 2: InfoSphere Information Server, Version 11.7 engine tier installed on the same computer as an existing DataStage 7.5 server and an existing InfoSphere Information Server, Version 8.1 engine tier.
Engine tier instance Server details
InfoSphere Information Server, Version 8.1 engine tier
  • Itag A23
  • Port 31546
  • /opt/IBM/InformationServer/Server
InfoSphere Information Server, Version 11.7 engine tier
  • Itag 123
  • Port 31540
  • /opt113/IBM/InformationServer/Server
The following table shows a scenario of with three InfoSphere Information Server, Version 11.7 engine tiers, and illustrates the use of port numbers and ITAGs for Version 11.7 installations.
Table 3. Scenario 3: Three instances of InfoSphere Information Server, Version 11.7 engine tiers installed on the same computer
Engine tier instance Server details
InfoSphere Information Server, Version 11.7 engine tier
  • Itag ADE
  • Port 31538
  • /opt/IBM/InformationServer/Server
InfoSphere Information Server, Version 11.7 engine tier
  • Itag BED
  • Port 31540
  • /opt2/IBM/InformationServer/Server
InfoSphere Information Server, Version 11.7 engine tier
  • Itag 123
  • Port 31542
  • /opt3/IBM/InformationServer/Server