Dell SC8000 - Page 101

Connect EN-SASx6x12/24 Enclosures
Dell Compellent 91
Dual Controllers, Eight Enclosures, Two Chains
Thisillustration showstwoSC8000controllerscabledtoeightSASenclosuresintwo
chains.ToaddredundancywithmultipleIOcards,addasecondSASIOcard.Createthe
A‐sidesofeachchainontheIOcardinslot6andcreatetheB‐sidesofeachchain onthe
IO
cardinslot5.IfanIOcard,cable,enclosure,orcontrollerfails,atleastonesideofachain
continuesoperating.IPCisoptionalinthisconfiguration.
Figure 84. Dual SC8000 Controllers, Eight Enclosures, Two Chains
Path Connections
IPC (Optional)CreateIPCconnectionsbetweenbothcontrollersonports2and4of
eachIOcard.
Chain1:ASide 1 ControllerA:slot6,port1→Enclosure1:topSBB,portC.
2StartingwithEnclosure1,daisy‐chaintheAsideofChain1bycabling:top
SBB,portB→nextenclosuredown:topSBB,portA.
3 FinishwithEnclosure 4:topSBB,portC?ControllerB:slot6,port3.
Chain1:BSide 1 ControllerA:slot5,port3→Enclosure4:bottomSBB,portC.
2StartingwithEnclosure4,daisy‐chaintheBsideofChain1by
cabling:bottom
SBB,portB→nextenclosureup:bottomSBB,portA.
3 FinishwithEnclosure1:bottomSBB,portC→ControllerB:slot5,port1.
Enclosure 1
Enclosure 2
Enclosure 3
Enclosure 4
Controller
Controller A
Enclosure 5
Enclosure 6
Enclosure 7
Enclosure 8
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