Split a big file system to several files

Gents

Actually I have question and i need your support.

I have this NAS file system mounted as /coresys has size of 7 TB

I need to Split this file system into several file systems as mount points I mean how to can I Split it professionally to different NAS mount points how to can I decide which subdirectory to be Split and mounted in different mount point.

I need the whole size of 7 TB to be split into different mount points.

each TB to be in single and different mount point.

hope you understand my question.

Your support please.

To get started, please post the output of:

mount -v

and give us a snapshot of your system.

Thanks.

And output from

du -sk /coresys/*

This is used to decide which directory will become a separate file system.