Chapter 3 Connect the Back End68 Storage Center SC8000 Controller Deployment GuideDual Controllers, One Enclosure, Single ChainThis illustration shows two SC8000 controllers cabled to one SAS enclosure in a singlechain.Figure 67. Dual SC8000 Controllers, One Enclosure, One ChainNote: In a single‐chain configuration, use SAS ports 2 (initiator) and 4 (target) tocreate a redundant IPC connection. When you configure these ports using the IOport wizard, set the port Purpose to Unknown.Path ConnectionsIPC 1 Controller A: slot 6, port 2 → Controller B: slot 6, port 4.2 Controller B: slot 6, port 2 → Controller A: slot 6, port 4.Chain 1: A Side 1 Controller A: slot 6, port 1 → Enclosure: top EMM, port A.2 Enclosure: top EMM, port B → Controller B: slot 6, port 3.Chain 1: B Side 1 Controller B: slot 6, port 1 → Enclosure: bottom EMM, port A.2 Enclosure: bottom EMM, port B → Controller A: slot 6, port 3.EnclosureController AController B4 3 2 1AA BB4 3 2 1
