Chapter 1: Introduction
SR Components
1-3
Figure 1-2: SR Enclosure Canister Mounting Holes
1.2. SR Components
1.2.1 LCD
Panel
Figure 1-3:
LCD Panel
The LCD panel shown in
Figure
1-3 consists of a 16x2 character LCD screen with two
navigation buttons (labeled as
W
V
in
Figure
1-3), three status-indicating LEDs
(
POWER
,
BUSY
and
ATTEN
), an enter button (labeled
ENT
) and an escape button
(labeled
ESC
). The LCD front panel provides full access to all RAID configurations and
monitoring. After powering up the controller, the initial screen will show the controller
model name. A different name may be assigned for the system or different arrays. This
will enable easier identification in a topology with numerous arrays.
1.2.2 Controller
Board
WARNING:
The controller board is a very sensitive component that can be easily damaged. When
working with the controller board make sure all safety precautions are strictly
adhered to. Failure to adhere to these safety instructions can result in severe damage
to the controller board.
The heart of the SR 170 controller is the SCSI-to-SCSI controller board (see
Figure1-4
).
The controller board has four SCSI-320 I/O channels (CH0, CH1, CH2 and CH3). Two
