Chapter 3 Connect the Back End
70 Storage Center SC8000 Controller Deployment Guide
Dual Controllers, Two Enclosures, Single Chain
Thisillustration showstwoSC8000controllerscabledtotwoSASenclosuresforminga
singlechain.Inasingle‐chainconfiguration,useSASports2(initiator)and4(target)to
createaredundantIPCconnection.WhenyouconfiguretheseportsusingtheIOport
wizard,settheportPurposetoUnknown.
Figure 69. Dual SC8000 Controllers, Two Enclosures, One Chain
Path Connections
IPC 1 ControllerA:slot6,port2→ControllerB:slot6,port4.
2 ControllerB:slot6,port2→ControllerA:slot6,port 4.
Chain1:ASide 1 ControllerA:slot6,port1→Enclosure1:topEMM,portA.
2Enclosure1:topEMM,portB→Enclosure2:top
EMM,portA.
3Enclosure2:topEMM,portB→ Controller B:slot6,port3.
Chain1:BSide 1 ControllerB:slot6,port1→Enclosure1:bottomEMM,portA.
2Enclosure1:bottomEMM,portB→Enclosure 2:bottomEMM,portA.
3Enclosure2:bottomEMM,portB→ControllerA:
slot6,port3.
Enclosure 1
Enclosure 2
Controller A
Controller B
4 3 21
A
AB
B
A
AB
B
4 3 21