To properly set up, add, and connect an expansion shelf enclosure to a DR Series system hardware appliance, the following tasks need to be completed:
1. Cabling: Request you to refer page no. 26 to 28 for cabling instructions in attached "Dell DR Series System Administrator Guide.pdf".
** Shutdown and unplug all power cables from the DR appliance, available expansion unit before cabling the new expansion unit (MD1200)
2. Please refer KB article for installation of license file and configuring the expansion unit (MD1200) in the DR4100 : https://support.quest.com/dr-series/kb/228024