Challenges in BI 4.0 Upgrade/ installation on the same system where BO 3.1 is installed

Hi Friends,

I need to install BI 4.0 system in same system where BOXI 3.1 already exists.

I referred the BI update document it shows we can install both BOXI 3.1 and BOBI 4.0 in the same system without uninstalling the old version. But I need to know the prerequisites, challenges and risk involved during the process of BOBI 4.0 installation.

Please suggest what are the things we need to take into consideration  before BI 4.0 installation without disturbing BOXI 3.1.

Please share experience and views.

Thanks in advance

Regards,

Fasi