This is just the beginning of series of useful short (and in future detailed) blogs.
Below are some useful Isilon commands which I refer back and will update as we keep going.
1) Get the serial number of the nodes
isi_hw_status -i | grep Ser
2) List of NFS exports, useful as a quick test (From NFS client)
showmount -e <Isilon hostname>
3) Get NFS exports list (from Isilon)
isi nfs exports list
4) Get SMB/CIFS shares list (from Isilon)
isi smb shares list