I have a Dell PowerVault MD feeding a bunch of servers through iSCSI. At one point I had to give 20Gb extra space to one of the servers due to some backup issues. Now I want to reclaim the space in the SAN drive so I can use it for other servers. I shrunk the volume in the server and now the 20Gb sit there as unallocated space. How do I get it back into the SAN drive as empty space?
SAN server is a W2k8 R2 machine and the server is a 2012 server.