Headroom stats with Powershell

Hi -


Has anyone tried pulling aggregate performance capacity numbers (headroom) via powershell successfully?  I'm noticing an issue when pulling SSD based aggregates (on an AFF8080 for example) vs spindle based aggrs (FAS8080).  The numbers returned for SAS based aggrs seem fine, but SSD seem completely off. 


Toolkit version: 4.5

DOTP version: 9.1 & 9.2P1

PS version: 5.1 (tried older versions as well)