The size of the virtual disks presented to your windows server is as listed under Size: 726.000 GB, the filesystem created of this disk is 719.162 GB The capacity windows is reporting is 725 GB, which is the same (779,534,426,112 / 1024 /1024 / 1024 = 725.998 GB). From a VNXe point of view, the space presented (a Filesystem is on it) to windows is in use, even if the windows server is not using all of the space.
Windows says 468 in use  VNXe says 719 in use  no snapshots, no protection, one vdisk  version 2.1.0.14097   ;   windows 2003 ent r2 sp2  [IMAGE]
Why is OS allocation and VNXe allocation usage different?