Consider you get 2 TB size for the mountpoint.
You need to get below information from your storage team.
NFS_Server_name:/Test/backup/vol1/test_project/ 
In above path :-
"NFS_Server_name" - will be the SAN/NFS server name or IP.
"/Test/backup/vol1/test_project/" - will be the directory structure created on SAN server. 
Now on your server you need to create NFS mountpoint as name "/test_backup" using above NFS path. 
Steps :-
1) First check on your server , if network is open to NFS server. 
#nslookup NFS_Server_name
If above command do not work , check with network team. If you able to nslookup follow next steps. 
2) Create blank directory with name of mountpoint require , in our case its "/test_backup" 
#cd /
#mkdir test_backup
3) Add below line in /etc/fstab   (in single line)
#vi /etc/fstab
NFS_Server_name:/Test/backup/vol1/test_project /test_backup nfs rw,bg,hard,retry=60,intr,rsize=1048576,wsize=1048576,noac,nfsvers=3 0 0
4) Change the permission of temporary as per below. 
#chmod 777 /test_backup
5) Now mount the mountpoint. 
#mount /test_backup
6) Now you can change the permission or owner of NFS mount point as per you require. 
#chmod 775 /test_backup
#chown -R oracle:oinstall /test_backup
7) Check the mountpoint size. 
#df -h /test_backup