Dell SC8000 - Page 124

Chapter 4 Connect the Front End
114 Storage Center SC8000 Controller Deployment Guide
Virtual Port Mode with Single-Network iSCSI
ConnectvirtualportmodeiSCSItoasinglenetworkifonlyoneEthernetswitchisavailable
andyouwanttoprotectagainstportorcontrollerfailure.
Inthisconfiguration,thereisonefaultdomainbecausethereisasinglenetwork.Each
controllerisconnectedtothefabricbyatleasttwo
iSCSIconnectionstoprovideport
redundancy.Ifasingleportfails,itsvirtualportfailsovertoanotherport.Ifacontroller
fails,thevirtualportsonthefailedcontrollermovetoportsontheothercontroller.This
configurationisvulnerabletoswitchfailure.
Prerequisites
 EachcontrollermusthavetwoavailableiSCSIfront‐endports.
 Therequirementsforvirtualportmodemustbemet.
Steps
1 ConnecteachservertotheiSCSInetwork.
2 Connectfaultdomain1(showninorange)toiSCSInetwork1.
 ControllerA,slot3,port1→Switch1
 ControllerB,slot3,port1→Switch1
 ControllerB,slot4,port2→Switch1
 ControllerA,slot4,port2→Switch1
Figure 98. Dual-Controller with Single-Network iSCSI in Virtual Port Mode
Ethernet Switch 1
iSCSI Network 1
Server
Controller B
Controller A
4 3 21
4 3 21
12
12
21
21