Steps for migrating DataStage project from 7.5 to 8.5

The below steps explains the DataStage parallel Job migration,

 

1. Export project backup from 7.5
2. Import the project backup to 8.5
3. Start adding the Environment Variables in 8.5 same as 7.5
4. Configuration file set-up same like 7.5
5. Compile the Job/Sequences to get the missing parameter/Values/Env variables.
6. Make sure the Plugins (DB/other passive stage you used in the 7.5) are with correct version are supported in 8.5 while you import.

Note :
Make sure you have license to import/compile/execute Parallel Job/ Sequence in the DS New version.
Make sure the DS Client services are enabled and installed with Patch if required.
Make sure the ODBC & TNS entries are made to talk with the database from DS jobs.
Make sure if you have to mount the database to bring as local.
Apart from the above steps, this is also a right time to change the job/Sequence design(for some,if required all) as well while you migrate.
If you a Re-designing the Job it should take as below,
2days -for Simple Job

3days -for Medium Job
5days -for Complex Job

For A single job migration it should take 30 Minutes (considering the network and other factor), so for 100 jobs it will take 6 days approximately if you are putting effort for 8 hours a day.Calculate accordingly.

For Server Job migration, same as above procedure.One thing you have to eliminate is Configuration file setup.
Make sure you have license to import/compile/execute Server Job/Sequence in the DS New version.