You can use the Command Line Interface (CLI) to control/query the Block-only array.  [URL]  glen
I have a number of VNX based storage arrays and I'm looking to interact with them programmatically, they are all VNX 5100, 5300 and 5500 units running in block storage mode.  Does anyone know if the XML API or other API can be used with these units, given we don't have unified storage and control station I'm not sure what the options are, if any.
XML API & VNX Arrays