Chapter 1: Introduction
Subsystem Components
1-7
1.3.4 Controller Module Interfaces
All external interfaces that connect to external devices are located on the
controller module’s rear-facing faceplate. The interfaces are listed below.
Figure 1-8: Controller Module Interfaces
Host Ports:
Two (2) SCSI-320 host channels (CH0 and CH1 in
Figure
1-8
) connect the Galaxy subsystem to the host or expansion enclosures
through the two (2) dual-stacked VHDCI SCSI connectors.
Ethernet port:
The controller module comes with a 10/100BaseT
Ethernet port for remote management using TCP/IP or telnet
connection. When operated in the dual-active mode, system
configuration is handled through one of the controllers. Shielded cables
must be used to protect against emissions. Connect the other end of the
Ethernet cable to a network switch/hub port of the local network.
COM ports:
Each controller module comes with two (2) serial ports.
The
COM1
port is used for accessing the controller-embedded
configuration utility that allows you to configure and monitor your
array or upgrade firmware over a VT-100 terminal emulation program
running on a management computer. An audio-jack to DB9 cable is
shipped with your subsystem to facilitate the connection.
•
The
COM2
port connects to an uninterruptible power
supply (UPS). An optional audio jack to DB-9 serial
communication cable (PN:
GAL-9270CUPSCab) is
available for purchase.
LED indicators:
The controller rear panel comes with several LED
indicators. Please refer to
Chapter 4
for information on how to monitor
your subsystem using the LED indicators.
Levers:
Two (2) eject levers located on the sides of the controller
module help retrieve or secure the controller module from or into the
controller bay.
