Hello ramohi, NFS shares are thin provisioned.  As space is needed it will increase in size till it reaches it max available configured space.  Here is a link to EMC Unity Family Configuring NFS File Sharing which has some additional information as well.  [URL] Here is also a link to Unity info hub which has some additional white papers and guides as well. [URL]
Hello, I am new to unity, and I need know that when we display the file systems for NAS server. The Size shows = 10GB The Used shows = 1.8GB The Allocated shows = 0.5GB Shouldn't the Size and Allocated be same? why it is different? what am I missing?  There is no quota set on the file system. [IMAGE] Thanks in advance.    
Unity 480F - Question on Quota