azure vm disk upload = socket hang up

I am trying to duplicate a Azure Linux VM and vhd file located in the East US to East Asia location.  To do this, I am trying to copy the vhd from East US to East Asia using the following command in the Windows Azure Power Shell:

azure vm disk upload “http://sourcestorage.blob.core.windows.net/vhds/sample.vhd” “http://destinationstorage.blob.core.windows.net/vhds/sample.vhd” “DESTINATIONSTORAGEACCOUNTKEY”

This runs for a couple of hours (for a 30 gig vhd), then fails with a socket hang up.  The vhd file is created with a size of 0 b.  I have tried about four times with the same error.  Any suggestions?