Lenovo ThinkSystem DM3000x Hardware Installation And Maintenance Manual

Step Perform on each controller Ports used3 Cable the management ports to the management networkswitches. • e0MDO NOT the plug power cords in at this point. Not applicable.Step 2. To cable your storage, see “Cabling controllers to drive shelves” on page 22.Cabling controllers to drive shelvesYou must cable the controllers to your drive shelves or to the onboard SAS ports if you only have onboarddrives and no external drive shelves.Cabling storage on a two-controller switchless cluster with no externalstorageYou must cable the SAS ports together in a two-controller switchless cluster so that both controllers canaccess the partner's onboard storage.Step 1. Cable the SAS ports on your two-controller switchless cluster, without external storage, using thefollowing steps:AC ACStep Perform on each controller Ports used1 Cable the SAS ports.• Controller 1 0a toController 2 0b.• Controller 1 0b toController 2 0a.Step 2. To complete setting up your system, see “Completing system setup and configuration” on page 23.Cabling storage on an HA pair with external drive shelvesYou must cable the shelf-to-shelf connections, and then cable both controllers to the drive shelves.22 ThinkSystem DM3000x and DM5000x Hardware Installation and Maintenance Guide