NonStop S-Series Hardware Installation and FastPath Guide (G06.29+)

Introduction
HP NonStop S-Series Hardware Installation and FastPath Guide—541880-002
1-36
Installation Overview
Topologies
Systems can be configured in two topologies, the Tetra 8 and Tetra 16 topologies.
Enclosures are cabled to each other in patterns that depend upon the system topology.
This cabling remains the same regardless of how the enclosures are physically
arranged.
For example, connector 1 on the ServerNet Expansion Board (SEB) in slot 51 of
enclosure 01 connects only to the SEB connector 1 of enclosure 02. Similarly, all I/O
enclosures connect to a unique SEB port although the ports might differ between
Tetra 8 and Tetra 16 configurations.
Therefore, the cabling patterns remain the same whether the enclosures are adjacent,
separated by other enclosures, or located in separate rows.
Fabrics and Slots
The relationships among components, slots, and fabrics are:
ServerNet cables connect SEBs or MSEBs in a processor enclosure to any of:
•
SEBs or MSEBs in another processor enclosure
•
IOMF CRUs in an I/O enclosure
•
ServerNet switch boards in an IOAM enclosure (MSEB connection only)
In systems with more than one enclosure, all processor enclosures contain SEBs or
MSEBs. These components are installed in slots 51 and 52.
Enclosure One of These Components Fits in This Slot
And Connects to
This Fabric
System
•
IOMF CRU
•
IOMF 2 CRU
•
PMF CRU
50 X
55 Y
•
SEB
•
MSEB
•
Other adapters
51 X
52 Y
53 X
54 Y
IOAM
•
IOAM ServerNet switch
board (module 2)
14 X
•
IOAM ServerNet switch
board (module 3)
14 Y
•
FCSA or G4SA 1 - 5 (modules 2 and 3) Connects to both X
and Y fabrics (dual-
ported)
Note. For information about whether SEBs or MSEBs are required for your system, see the
NonStop S-Series Planning and Configuration Guide.