How to implement table splitting in cache

Do you want to store one table on several servers?

In that case use Sharding.

I agree with Eduard.

However, there is an option to have global mapping (by subscript) to different databases that might be located on multiple disks for getting better I/O

https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=GG...