ServerNet Cluster Manual

Planning for Installation

ServerNet Cluster Manual—520575-003

2-16

Two MSEBs Needed for Each Server

PICs for MSEBs That Will Replace SEBs

If slots 51 and 52 of group 01 contain SEBs, you must replace them with MSEBs. The

MSEBs that you install in these slots must contain a single-mode fiber-optic PIC with

the node-numbering agent (NNA) field-programmable gate array (FPGA) in port 6. Port

6 is used to connect fiber-optic cables from the server to a ServerNet II switch. See

Figure 2-4.

If slots 51 and 52 of group 01 already contain MSEBs, check the PICs installed in the

MSEBs in port 6. If the system is running, you can use the OSM Service Connection or

TSM Service Application to determine if a PIC installed in port 6 is an NNA PIC. Check

the PIC Type attribute for the PIC subcomponent of the MSEB. Section 5, Managing a

ServerNet Cluster, shows a TSM display of the PIC attributes.

If the system is not running, you can remove the MSEB and visually check the PIC

installed on the MSEB common base board. The NNA PIC is roughly twice as long as

all other PICs for the MSEB. See Figure 1-11 on page 1-23.

Figure 2-4. Single-Mode Fiber-Optic PIC Installed in Port 6

Note. When installed in an MSEB and viewed on the MSEB faceplate, the single-mode fiber

PIC, multimode fiber PIC, and single-mode fiber NNA PIC are identical in appearance.

vst004.vsd

MSEB

Port 6 Containing Single-Mode

Fiber-Optic Plug-In Card (PIC)

With Node-Numbering Agent

(NNA FPGA)