Hello Stimpy555,
To reset the unit what you can do is to reset the password first on both controllers then you can go into MDSM and remove all virtual disks & host mappings. To reset the passwords on the back of the controllers there is an orange latch & there is a button under the latch if you press that button it resets the password on the controller. You will need to do this to both controllers to be sure that the password has been reset. Once that is done then you can login to the management port default IP 192.168.128.101 & 102. If you have not installed MDSM( Modular Disk Storage Manger) then will need to do so you can access the management port. Here is a link to download it if you need it. http://www.dell.com/support/drivers/us/en/19/DriverDetails/Product/powervault-md3600i?driverId=JJW99&osCode=WLHS1&fileId=3084846822&languageCode=EN&categoryId=CD Once into the controllers then you can remove all virtual disks.
Please let us know if you have any other questions.