Location Of The Cpu Module And Blank Filler Module; Cpu Module Contents; Reasons For Removing The Cpu Module - IBM System Storage N3700 Hardware And Service Manual

N series

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CAUTION:

The CPU module is a field-replaceable unit (FRU). Replacement of the CPU

module can only be performed by certified IBM service personnel.

Replacing the CPU module consists of the following procedures:

v "Removing the CPU module" on page 30

v "Moving the Data ONTAP software" on page 32

v "Procedures for installing the CPU module" on page 31

Location of the CPU module and blank filler module

The CPU module is at the center position on the back of your N3700 storage

system. An active-active (clustered) N3700 storage system (2863–A20) has two

CPU modules (nodes), with Node A above Node B. On a non-active-active

(non-clustered) N3700 storage system (2863-A10), a blank filler module is in the top

position directly above the bottom CPU module. Both modules use the same cam

handle to remove and install the module.

Attention:

operation to ensure proper airflow through the N3700 storage system.

The CPU module contains the system motherboard, CPU, memory DIMM,

CompactFlash card (underside), battery pack, and other system components.

Figure 9. CPU module contents

There are several reasons for removing the CPU module:

v Replacing a defective CPU module (IBM service representative only)

v Replacing the SDRAM DIMM

v Accessing the CompactFlash card

Both modules must be in place with both bays plugged in during

Memory DIMM

Backplane

connectors

Note: If you are returning a defective CPU module, remove the SFP modules

from the defective module. Save them for reuse in the replacement CPU

module.

CPU

Battery pack

Chapter 5. Replacing N3700 storage system devices

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