Chapter 3 Connect the Back End66 Storage Center SC8000 Controller Deployment GuideSingle Controller, Four Enclosures, Two IO Cards, Two ChainsThis illustration shows a single SC8000 controller cabled to four SAS enclosures in twochains. When cabling a second chain of enclosures, use a second IO card to improveredundancy.Figure 65. Single SC8000 Controller, Four SAS Enclosures, Two IO Cards, Two ChainsPath ConnectionsChain 1: A Side 1 Controller: slot 6, port 1 → Enclosure 1: top EMM, port A.2 Enclosure 1: top EMM, port B → Enclosure 2: top EMM, port A.Chain 1: B Side 1 Enclosure 1: bottom EMM, port B → Enclosure 2: bottom EMM, port A.2 Enclosure 2: bottom EMM, port B → Controller: slot 5, port 3.Chain 2: A Side 1 Controller: slot 6, port 3 → Enclosure 3: top EMM, port A.2 Enclosure 3: top EMM, port B → Enclosure 4: top EMM, port A.Chain 2: B Side 1 Enclosure 3: bottom EMM, port B → Enclosure 4: bottom EMM, port A.2 Enclosure 4: bottom EMM, port B → Controller slot 5, port 1.Enclosure 1Enclosure 2Enclosure 3Enclosure 4Controller 4 3 2 1AA BBAA BBAA BBAA BB4 3 2 1
