Predictive Analysis In-Proc vs In-DB HANA

Hi Experts,

I have a question regarding the best pratice on using PA In-Proc and In-DB HANA.

My question is regarding in what to use if we have a DB with 1/2 Million rows growing every Month, and run models like K-means and apriori, etc..?

Should we go for In-DB (HANA) or IN-PROC should work?

We are testing the In-Proc version and for smal set of data (1 M rows) the models take lots of time to execute.

Thank you for your help.

BR,

Vasco