NonStop S-Series System Expansion and Reduction Guide

Table Of Contents
Planning System Reduction
HP NonStop S-Series System Expansion and Reduction Guide522465-009
3-11
Example Using the ServerNet Worksheets
4. Trace Communication Paths to Each Enclosure
Removing an enclosure removes communication paths within your system. In this step,
you determine what communication paths will be removed from your system:
1. Starting from the central “X” in the tetrahedral topology for the system, trace all
ServerNet cables to the ServerNet expansion boards (SEBs) or modular SEBs
(MSEBs) in the processor enclosures.
2. Trace through those SEBs or MSEBs to the attached enclosures.
3. Do not trace through the blacked-out enclosure. All communication paths end
when they reach that enclosure.
The following example worksheet shows a Tetra 16 system from which you want to
remove group 02. Because group 02 is blacked out, you cannot trace any paths
through the SEBs or MSEBs in group 02 to reach any other enclosures attached to
group 02. Therefore, no paths reach group 06.