Dell SC8000 - SC280 SAS Enclosures

Chapter 1 Introduction
12 Storage Center SC8000 Controller Deployment Guide
SC280 SAS Enclosures
SASenclosuresholddrivesfordatastorageandconnecttothecontrollersthrough
back‐endports.TheStorageCenterSC280isa5Usize6GBSASenclosure.TheSC280
enclosuresupportsupto84harddrivesinstalledintwodrawersof42driveseach.The
SC280enclosuresalsocontaintwo
powersupplyunits,fivecoolingfanmodules,andtwo
redundantenclosuremanagementmodules(EMMs).
ThefollowingrequirementsapplytoSC280enclosures:
 SC280enclosurescannotbeconnectedtothesamechainasanyotherenclosures.
 EachchainsupportsamaximumoftwoSC280enclosures.
 ASASIOcardcansupportmixedchains(forexample,achain ofSC280enclosures,and
achainofSC200enclosures),howevertheenclosuresmustallbe6GB.
 ControllersmustberunningStorageCenterOS6.4.1orlatertodetectSC280enclosures.
Caution: Thepowersuppliesmustbeofthesameinputtypeandhavethesame
maximumoutputpower.Mismatchedpowersuppliesresultinanerrorcondition.
Caution: ACpowersuppliessupportboth220Vand110Vinputvoltages.When
twoidenticalpowersuppliesreceivedifferentinputvoltages,theycanoutput
differentwattagesandtriggeramismatch.
Caution: Whencorrectingapowersupplymismatch,replaceonlythepower
supplywiththeflashingindicator.Swappingtheoppositepowersupplytomakea
matchedpaircanresultinanerrorconditionandunexpectedcontrollershutdown.