Information about the condition of the controllers is conveyed by indicator LEDs on
the back of each controller. (“RAID controller LEDs” on page 145 identifies the
indicator LEDs on the RAID controller and explains the conditions that each LED
indicates.)
Controller cable connections
Each controller provides the following connections:
v Four dual-ported fibre channel drive channels
v Up to eight single-ported Fibre Channel host channels, up to four RJ-45 iSCSI
host ports, or four single-ported FC host channels and two RJ-45 iSCSI host
ports, depending on the types of host interface cards (HICs) installed in the
controllers.
v Two RJ-45 Management Ethernet ports.
v One RS-232 serial port.
v AC power.
Figure 4 on page 12 and Figure 5 on page 12 identify the connectors on the back of
each controller.
Controller A
Controller B
Controller A latches
Controller B latches
ds50014
Figure 3. Controllers in the storage subsystem
Chapter 1. Introduction 11
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