Hi Raj.la,  Are you on 7.2 or later and do you have auditing enabled?   If not, NFS does not automatically log creation/deletion of files. You may be able to find some information by checking:  #isi_for_array - s history | egrep nfs
hello,  Does Isilon has nfs exports history log ??  we have a situation where we need to find one of old nfs export path/date. which is not there at this moment.
NFS Exports history