You can do if from the cli with "sh disk detail" in 4.0.13.
WAAS-POD-2#sh disk details
Physical disk information:
disk00: Present V5WS6ADA (h01 c00 i00 l00 - DAS)
140011MB(136.7GB)
disk01: Present V5WRWGZA (h01 c00 i01 l00 - DAS)
140011MB(136.7GB)
Hope that helps,
Dan