Chapter 3 Connect the Back End
74 Storage Center SC8000 Controller Deployment Guide
Dual Controllers, Eight Enclosures, Two Chains
Thisillustration showstwoSC8000controllerscabledtoeight6Gbenclosuresusingtwo
chains.ToaddredundancywithmultipleIOcards,addasecondSASIOcard.Createthe
A‐sideofeachchainontheIO cardinslot6andcreatetheB‐sideofeachchainonthe
IO
cardinslot5.IfanIOcard,cable,enclosure,orcontrollerfails,atleastonesideofaloop
continuesoperating.IPCisoptionalinthisconfiguration.
Figure 72. Dual SC8000 Controllers, Eight Enclosures, Two Chains
Chain2:BSide 1 Controller B:slot5,port3→Enclosure3:bottomEMM,portA.
2Enclosure3:bottomEMM,portB→Enclosure4:bottomEMM,portA.
3Enclosure4:bottomEMM,portB→ControllerA:slot5,port1.
Path Connections
IPC (Optional)CreateIPCconnectionsbetweenbothcontrollersonports2and4of
eachIOcard.
Chain1:ASide 1 ControllerA:slot6,port1→Enclosure1:topEMM,portA.
2StartingwithEnclosure1,daisy‐chaintheAsideofChain1bycabling:top
EMM,portB
→nextenclosuredown:topEMM,portA.
3 FinishwithEnclosure 4:topEMM,portB→ControllerB:slot6,port3.
Path Connections
Enclosure 1
Enclosure 2
Enclosure 3
Enclosure 4
Controller B
Controller A
Enclosure 5
Enclosure 6
Enclosure 7
Enclosure 8
4 3 21
4 3 21
4 3 21
4 3 21
A
AB
B
A
AB
B
A
AB
B
A
AB
B
A
AB
B
A
AB
B
A
AB
B
A
AB
B
To Next Page
Loading...
