That's not really possible.  The VNX has no way to realistically track what's been written to the LUN then re-written.  For example, I could have a Windows app that simply overwrote data on the LUN.  From the VNX perspective, the LUN would always appear 100% allocated.  Let us know if that helps!  Karl
Hi,  I have a simple question for you all, yesterday we got an issue with an operation done onto a lun provisioned from a VNX2.  A lun has filled up because of an operation on a windows server.  Is there a way to have the VNX2 send or notify the administrator that a lun is getting full ?  We know that it is possible at the pool level, but is it at the lun level ?  Thank you for your help,  Christian
VNX Lun filling up