Hello Jamie, With the NX3000 it was not tested using WSS2012R2. Now with that being said you should be able to upgrade the system to WSS2012R2 & should not haven issues but since it wasn’t tested I can’t say for sure that it will work. Also I am not sure if you can do an in-lace upgrade and not have any issues. Now the NX3000 is a Poweredge R710 server & there are drives that do support 2012R2 so you could try those drivers if you ran into any issues driver wise. Please let us know if you have any other questions.
All, I have a PowerVault NX3000 with Windows Storage Server 2008 R2 installed on it.  Can an in-place upgrade to Storage Server 2012 R2 be accomplished?  Any known driver problems? Thanks in advance for the help, Jamie
Upgrade Dell PowerVault NX3000