I have just noticed that the drive listed in the inventory is incorrect. It's the drive that the unit shipped with, however, it's been replaced by four 15k SAS disks. Also, here's the iDRAC6 Enterprise info:
Attribute Value
Device Type iDRAC6
Hardware Version 0.01
Firmware Version 1.92 (Build 05)
Firmware Updated Wed Feb 6 00:03:04 2013
RAC Time Fri Feb 15 22:37:43 2013
Number of Possible Active Sessions 5
Number of Current Sessions 0
LAN Enabled Yes
IPMI Version 2.0