Hello Jaxon62,   I think the "Repurpose or Retire" is what you are looking for. See video: [URL]   To delete the data on the hard drives you could create a dissimilar array and do a Full Initialization. Say you have a RAID1 Boot in to the controller and delete the virtual disk. Then make a single drive RAID0 on each of the drives and do Full Initialization on the RAID0's.  
Good afternoon All Please can someone point me in the right direction, I have 4 M620 blades in a M1000e enclosure - I need to remove the OS and set back to factory defaults.  I have googled but all I am finding is how to reset the idrac - I will also need to do that after I have a blank blade.   Many thanks   E.  
Poweredge M620 factory reset and disk wipe