Chapter 4: Installing Components

Processor VRM requirements

This server requires the installation of two different types of VRMs (Voltage Regulator Modules). The number and types of VRMs required depends on the number of processors installed. Before installing or removing processors, refer to the following guidelines:

Number ofVRMs required
processors

 

installed

 

 

 

1

No VRM required

 

 

2

No VRM required

 

 

3

One 9.1 volt processor cache VRM required

 

One 10.2LD volt processor core VRM required

 

 

4

One 9.1 volt processor cache VRM required

 

Two 10.2LD volt processor core VRMs required

 

 

Installing and removing VRMs

When a third processor is installed in your server (in CPU socket 3), two VRMs (one VRM

9.1for the cache and one VRM 10.2LD for the processor core) also need to be installed at the same time. Also, when a fourth processor is installed, an additional VRM 10.2LD must be installed.

To install a processor cache VRM:

1

2

3 Remove the processor air baffle by following the instructions in “Removing and installing the processor air baffle” on page 67.

4 Pull the plastic tabs away from the sides of the VRM socket.

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