Dell SC8000 - Adding to an Existing SC280 Enclosure Chain

Appendix A Adding or Removing an Enclosure
178 Storage Center SC8000 Controller Deployment Guide
Adding to an Existing SC280 Enclosure Chain
Thefollowingexampleshowshowtoinsertanenclosureintoanexistingenclosurechain
byconnectingtheenclosuretoonesideoftheenclosurechainatatime.
Check the Lead Controller
IdentifytheleadcontrollerbycheckingcontrollersummaryinformationinSystem
Manager.ThesecablinginstructionsassumethatControllerAisthelead controller.
1 IntheStorageCenterSystemManager,selecttheControllersnode.
2 Inthecontrollersummarypanenotewhichcontrollerisidentifiedastheleader.
Check Current Disk Count
CheckthecurrentnumberofdrivesaccessiblebytheStorageCentertouseasacomparison
afteranewenclosureisadded.
1 IntheStorageCenterSystemManager,selectStorageManagement→System→
Setup→Configure LocalPorts.
2 MaximizetheConfigureLocalPortwizardsothatyoucanseetheTarget
Count
column,andnotethenumberofdrivescurrentlyviewedbythecontrollers.This
numberincreaseswhennewenclosuresareadded.
Add an Enclosure to an Existing Chain Currently in Service
Whenaddingenclosurestoanexistingconfiguration,addenclosurestotheendofthe
chain.Disconnectthechainonesideatatimetomaintaindriveavailabilitywhileadding
anenclosure.
Connecting the Enclosure to the A Side
1 DisconnecttheA‐sidecablesfromthecontrollersasshowninFigure 113onpage 180.
 ControllerA:slot3,port1
 ControllerB:slot3,port3
IOcontinuesthroughtheB‐sidecables.
2 Turnontheenclosurebeingadded.Whenthedisksspinup,makesurethatthefront
panelenclosureandpowerstatusLEDsshownormaloperation.
3 MovethecablefromEnclosure1:left,portB→Enclosure2:left,port C.

4 ConnectanewcablebetweenEnclosure1:left,portB→Enclosure2:left,portAas
showninFigure 114onpage 181.
5 ConnecttheA‐sidecablestothecontrollersasshowninFigure 114onpage 181.
 Enclosure2:left,portC→ControllerB:slot3,port3.
 Enclosure1:left,portC→ControllerA,slot3port1.
6 IntheStorageCenterSystemManager,selectStorageManagement→System→
Setup→ConfigureLocalPorts.
7 Makesurethat:
 SlotandslotportsareUpandthePurposeissettoback‐end.
 TargetCountequalsthenumberofaddeddrives,demonstratingthatthecontroller
recognizesthenewenclosure.
Caution: Beforeaddinganenclosuretoanexistingchain,makesurethatyourdata
isbackedup.Formaximumprotection,addenclosuresduringaserviceoutage.