6
■
System Unit
System unit refers to a CPU device or a set of active and standby CPUs. The CPU is a computer that manages all
the system resources and system devices within a system domain. In a WJ-ASC960-based system, the CPU refers
to a WJ-MPU955A CPU.
System Unit
■
System Domain
A system domain is an entity that contains one system unit, up to 64 system controllers, only one GX switch node,
and only one SX850 or SX650 switch node. The domain is capable of performing system tasks as an independent
entity, or working with other domains to create a distributed network security system. In a WJ-ASC960 based sys-
tem, the system assigns its domain number equal to its unit number.
An SX650/SX850 switch node is always inside a system domain, while a GX switch node can be across more than
one domain, as shown in the following diagram.
System Domain Diagram
WJ-MPU955A CPU
Unit #1
Central Processing Unit WJ-MPU955A
FAN ALARM
HDD
ACTIVE
OPERATE
Domain #1
Domain #2
PC
with Admin Console
System Controller
WJ-MPU955A
Unit #1
WJ-SX650 or WJ-SX850
*1
SX650/SX850 Switch Node
CPU
GX Node
WJ-GXE900
WJ-GXD900
OPERATE
1
ACT
1000
100
LINK1
STATUS
2
3
4
5
6
7
8
MPEG3 Encoder WJ-GXD
900
OPERATE
STATUS
MPEG2 Encoder WJ-GXE
900
1
2
3
4
5
6
7
8
Central Processing Unit WJ-MPU955A
FAN ALARM
HDD
ACTIVE
OPERATE
OPERATE
OPERATE LED WILL BLINK
IF COOLING FAN MALFUNCTIONS
Matrix Switcher WJ-SX
650
*1 WJ-SX650 needs WJ-PB65E01.
WJ-SX650 and WJ-SX850 cannot be set in the same domain.
