User's Manual

112944-B Rev. A 2-1

Chapter 2

Installing a CPU Memory Upgrade in the SN

This chapter describes how to install a CPU memory upgrade in a Bay Networks

Switch Node (SN). After you review the SN SIMM types and attach the antistatic

wrist strap, you will need a ﬂat-tip screwdriver to complete the following steps:

1. Removing the SN CPU module

2. Removing DRAM SIMMs

3. Installing DRAM SIMMs

4. Removing the Tag SIMM

5. Installing the Tag SIMM

6. Labeling the SN

7. Replacing the SN CPU module

Reviewing the SIMM Types

The SN uses SIMMs to provide the following:

• Dynamic random access memory (DRAM).

• Tag memory, which adds a protection tag to individual memory locations. For

example, a memory location might be tagged with write protection.