How to make databases work with different disks?

Question

PostgreSQL

Good afternoon, I would like to hear the opinion of people who have encountered similar tasks)
In general, there are 2 RAID arrays, one SSD, the second HDD. I would like to use the HDD to store, in general, information that is not necessary for the system to work, namely, the collection of statistics for further analysis.
That's actually the question ..) How is it better to implement? I found information about transferring the DBMS to another disk, but there is no information that they would work in pairs.
Thank you for your time.

Answer 1

You need tablespace: https://www.postgresql.org/docs/current/static/man...