1-6 System Overview
A
– System power LED
When green, system power is on.
When off, system power is off.
B
– Status 1 LED (group 1)
Tower: Left side of system
Rack: Top of system
When green, the Group 1 PCI- and CPU-modules are
operating normally. See Table 1-1 for a list and description of
the system status LED indicators.
C
– Status 2 LED (group 2)
Tower: Right side of system
Rack: Bottom of system
When green, the Group 1 PCI- and CPU-CPU modules are
operating normally. See Table 1-1 for a list and description of
the system status LED indicators.
D
– Disk activity LED
When green, internal disk drives are being accessed. See
Table 1-1 for a list and description of the system status LED
indicators.
E
– Front panel
Panel contains the LCD, the system power button, four LEDs,
and a USB port.
F
– USB port
USB connector jack used for debug only
G
– System power button
Press to turn system DC power on or off.
H
– SCSI hard disk drive bays
(storage bays)
Each slot in a bay can contain one hot-pluggable 3.5-inch disk
drive.
The slots are numbered 1 – 6 left to right (numbers are not
SCSI IDs). SCSI IDs are 0, 1, and 2 for each group of three
disk drives. The drives are mirrored as follows: 1 – 4, 2 – 5,
and 3 – 6. Each drive has two status LEDs. Refer to Table 1-2
for information on disk drive status LED panel indicators.
I
– CPU modules
Two CPU modules providing Dual Modular Redundancy
(DMR). The CPU modules are numbered 1 – 2 left to right.
Each CPU module contains one or two processors and a
maximum of up to 2 GB of SDRAM memory. Refer to Table
1-3 for information on CPU module status LED indicators.
J
– PCI modules with PCI adapters
Two hot-pluggable PCI modules. The PCI modules are
numbered 1 – 2 left to right. Each PCI module contains four
PCI adapter card slots and two embedded adapters (LAN and
SCSI disk). Each module has a pair of status LEDs and a
LAN port. See Table 1-4 for a list and description of the PCI
module status LED indicators. See Table 1-5 for a list and
description of the PCI adapter-slot status LEDs.
K –
Device module
Houses an IDE 24X CD-ROM drive and 3.5-inch IDE high-
capacity (120 MB) super (floppy) disk drive (not hot
pluggable).
L –
Liquid Crystal Display (LCD)
A 2-line, 16-character display.
Displays system event messages:
!
Startup
!
Self-test
!
Normal operating
!
Alarm conditions
See Chapter 5 for a list and description of the system event
messages.
M –
Tape drive module
(tower system only)
Houses the optional tape drive bay kit (that includes a 75 watt
power supply) and up to two optional 5.25-inch tape drives.
The tape drives are numbered 1 – 2, left to right.
Figure 1-5. Front Chassis Features and Controls (Continued)
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