This is very disappointing. I have a DS-2CD2132F-IS running V5.2.0 build 140721. I have a 1 TB drive in my NAS (unRAID) that I have tried sharing with NFS, but I get the same reversion to "uninitialized" that is described in this thread. When I try SMB/CIFS, I can successfully connect to the share ("test successful"), but I am unable to format the share - it immediately goes to "complete" then resets to "uninitialized." I am quite frustrated, and right now my view is that the cameras I bought for $1000 are not really fit for purpose. In the data sheets, all these cameras claim to support NAS.