Bar2D2, The reasoning for that is that the iDrac6 initializes before the raid controller does, so that information isn't available to it yet. The iDrac7 is now incorporated in the LifeCycle Controller/USC so it is all initialized at the same time.
iDRAC 7 shows a nice storage TAB with health info, but iDRAC 6 only shows disk inventory. Should there not be a storage TAB in 6 also so i can see disk health?   
iDRAC 6 does no show disk health (OS ESXi 5.1)