DellPowerVault™TL4000/TL2000FailoverGuide
14|Page 12/31/09 version 2.0
Failoverconfiguration
(onehost,oneswitch,twoFCdrives)
MainPath
Failover Path
Figure10:ReferenceConfiguration10
FailoverReferenceConfiguration11:
OnehostwithtwodualportSASHBAsandonePowerVault™withoneLT04SASandLT05
SASdrive
Inthisconfiguration,failoveroccursifoneofthedrivesinthelibraryfails(hardwarefailureordriveis
disconnectedfromtheHBA).
IntheeventasingleportintheSASdrivefails,failoverwilltakeeffectanddatawillbestreamedonto
thesamedriveusingthesecondSASconnection.
IntheeventaSASdrivefails;failoverwillresultoncontrolpathanddatamovedtotheadditionaldrive
inthelibrary
ThephysicalconnectionofthisconfigurationisshowninFigure11
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