yes - if you want some space exported that doesn't exist yet than you need to create the file system first the GUI has a wizard that can do this together with the export  on the NFS client side it depends how you do the mount - if you use the normal Unix mount command the it would normally not survive a reboot you need to use the client GUI or put it into a config file like /etc/dfstab to get it automatically mounted again after a reboot  There some good books and online resources about NFS out there - I would recommend NFS for dummies or Hal Stern Managing NFS and NIS from o'Reilley  Rainer
Hello Guys,  I am totally new to EMC celerra. Can anyone let me know, how do I create a NFS export share to couple of redhat servers in my environment. If any one can let me know some steps, or any documented manual for that, it would be really appreicated.   Thank You Rama 
Creating NFS exports for Redhat server