Looks like it might be a problem with Compellent Command Set 7.1.0.4. The script functions as expected with Command Set version 7.0.0.4. Co-Pilot will continue investigating as a possible bug. 
I've been working on a script to automate the creation of volumes within Storage Center, map to a cluster object, present the devices within vSphere and create VMFS datastores. I have the logic working as I want, but when I'm using a CSV to create multiple volumes at once, the script will frequently hang after creating the second or third volume. The Storage Center logs seem to indicate my connection is being refused for some reason. I have an ongoing case open with Co-Pilot, I just thought I would check to see if anyone else had run into similar issues? This occurs against SCOS 6.4.5 and 6.5.10.
Powershell and Storage Center