Don't use CASA on disks that are NFS mounted

Don't use CASA on disks that are NFS mounted

[Data analysis servers(kaim* & kaih*)]

We strongly recommend that you use CASA on the home or local disk areas (/wkm[01-20], wkh[01-12])
because if you use CASA on NFS mounted disks (/lfs[01-16]), some tasks may not be run on all versions of CASA.