Hello TowelGuy,   In this document you can check power management options for Dell PowerEdge servers:   [URL]  p.27   Please let me know if you have any questions,   Thanks  
The reason I ask is, I am currently running a Lenovo TD350 server which has turned out to be an absolute AC power hog.  My external backup HDD for one is powered on all of the time.  This I feel is not only extra power consumption but unnecessary wear on the drive for it to be powered on 24/7. Lenovo's policy is that they have no intention of ever adding power management options to their server line. Thanks Don Resor Los Angeles
Dell T640 Power Management Options