VPD typical example:
pdisk0 20-58-P 4GB SSA F Physical Disk Drive
Manufacturer................IBMSSA
Machine Type and Model......DFHCC4C
Part Number.................27H1698
ROS Level and ID............9190
Serial Number...............6816957D
EC Level....................488651
Device Specific.(Z2)........RAMSC091
Device Specific.(Z3)........99F7898
Device Specific.(Z4)........97245