NonStop NS-Series Planning Guide (H06.05+)

Integrity NonStop NS16000 System Description
HP Integrity NonStop NS-Series Planning Guide—529567-008
4-16
Example System ServerNet Pathways
This illustration shows a logical representation of a complete typical 4-processor triplex
system with the X and Y fabrics:
ESS
VST337.vsd
Logical
Processor
0
Logical
Processor
1
Logical
Processor
2
Logical
Processor
3
LSU
NSBE B
NSBE A
NSBE C
Fiber Optic Cables
PE
0
PE
0
PE
0
PE
1
PE
1
PE
1
PE
2
PE
2
PE
2
PE
3
PE
3
PE
3
A B C
LSU 0
A B C
LSU 1
A B C
X Y
LSU 2
A B C
X Y
LSU 3
X Y
X Y
IOAM
X ServerNet
Switch
Y ServerNet
Switch
I/O Adapter
Module 2
I/O Adapter
Module 3
Fibre Channel
Fibre Channel
Disk Module
FCAL A FCAL B
X ServerNet
Fibre Channel
FC-SCSI
Router
SCSI
Tape
SCSI
Fibre
Channel
Tape
Y ServerNet
Triplex
Processor
High-Speed Ethernet
P-Switch
X-Fabric
PICs
PICs
S-Series
I/O Enclosure
I/O
PICs
PICs
P-Switch
Y-Fabric
S-Series
I/O Enclosure
I/O
Y ServerNet
Links
X ServerNet
Links
(NSBE C not
used in duplex
system)