The usage of mount file system of different servers

Linux and Unix-Like UNIX and Linux Applications
1

There is a file system in server1 which is mounted on different file system on server2.

Filesystem kbytes used avail capacity Mounted on
server1:/users/user1
7047581 5994192 982914 86% /u01

/data/datafiles/user1

The data in /users/user1 in server1 is reflecting in /u01

/data/datafiles/user1 of server2.

I want to know whether the data is taking the disk space of server1 or server2.

I also want to know, if we access or change a file system on server2, whether it is using disk space of server1 or server2.

Please help me in this regard.

2

This looks like it's physically on server1, and mounted over NFS on server2. This is just a hunch, but it's probably the best you can get with the information you posted. Perhaps you could simply ask your local admin.