Add the SC280 Expansion Enclosure to the A-Side of the ChainConnect the expansion enclosure to one side of the chain at a time to maintain drive availability.1. Remove the A-side cable (shown in orange) that connects storage controller 1: port A to storagecontroller 2: port B. The B-side cable continues to carry I/O while the A-side is disconnected.Figure 137. Remove the A-Side Cable from the Storage Controllers1. Storage system 2. Storage controller 13. Storage controller 22. Cable the expansion enclosure to the A-side of the chain.a. Connect a SAS cable from storage controller 1: port A to the expansion enclosure: left EMM, portC.b. Connect a SAS cable from storage controller 2: port B to the expansion enclosure: left EMM, portB.Figure 138. Connect the A-Side Cables to the Expansion Enclosure1. Storage system 2. Storage controller 13. Storage controller 2 4. Expansion enclosureAdd the SC280 Expansion Enclosure to the B-Side of the ChainConnect the expansion enclosure to one side of the chain at a time to maintain drive availability.1. Remove the B-side cable (shown in blue) that connects storage controller 1: port B to storagecontroller 2: port A. The A-side cables continue to carry I/O while the B-side is disconnected.154 Adding or Removing an Expansion Enclosure
