Cisco DistributedDirector 4700-M Install and Config Guide
Replacing Memory
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Replacing Memory

Table Of Contents

Replacing Memory

Replacing Main Memory SIMMs

Removing Main Memory SIMMs

Installing Main Memory SIMMs

Replacing Shared Memory SIMMs

Removing Shared Memory SIMMs

Installing Shared Memory SIMMs

Replacing the Boot Helper Flash Memory SIMM

Removing the Boot Helper Flash Memory SIMM

Installing Flash Memory SIMMs

Testing Your Boot ROM Installation


Replacing Memory


This appendix describes how to replace or upgrade memory in a Cisco DistributedDirector 4700-M and contains the following sections:

Replacing Main Memory SIMMs

Replacing Shared Memory SIMMs

Replacing the Boot Helper Flash Memory SIMM

Testing Your Boot ROM Installation

There are two dynamic random-access memory (DRAM) systems in the Director. One is the shared memory, which is the interface that the network processor modules send data to or transmit data from, and the other is the primary or main memory, which is reserved for the CPU. In addition, the Director has Flash memory for the system software image and for the boot helper image.


Caution   
To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid damaging the underlying system card, avoid using excessive force when you remove or replace SIMMs.

The Director main memory upgrade requires replacing the main memory configuration of two 8-MB SIMMs (16 MB) with two 16-MB SIMMs (32 MB) or with two 32-MB SIMMs (64 MB).

The Director shared memory upgrade permits you to replace the 4-MB shared memory SIMM with an 8-MB SIMM or a 16-MB SIMM.

To upgrade the Flash memory, replace or add to the standard Flash memory configuration of 4 MB with 16, 32, or 64 MB of Flash memory. Figure C-1 shows the SIMM locations in the Cisco 4700-M.

NVRAM in the Director uses an internal lithium battery to maintain data. Although this is not a field-serviceable component, we are required to provide the following safety warning:


Warning   

There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. (To see translated versions of this warning, refer to the appendix "Translated Safety Warnings.")



Note   Configure the J5 jumper as shown in Figure C-1 to permit writing to Flash memory.


Figure C-1 Director SIMM Locations

Replacing Main Memory SIMMs

SIMMs are manufactured with a polarization notch to prevent them from being installed backward. Figure C-2 shows the polarization notch and locations of the alignment holes on a main memory SIMM card. The main memory SIMM cards are installed with the connector edge down and the component side facing in, as shown in the upper right of Figure C-1 and Figure C-2.

Figure C-2 Director Main Memory SIMM

Removing Main Memory SIMMs

Take the following steps to remove main memory SIMMs:


Step 1 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the upper right corner of Figure C-1.


Caution   
Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be damaged by mishandling.

Step 3 Remove one SIMM at a time, beginning with the SIMM farthest from the edge of the motherboard.

Step 4 Pull the locking spring clips on both sides outward and tilt the SIMM free of the clips to lift the SIMM out of its socket. (See Figure C-3.)

Figure C-3 Removing Main Memory SIMMs

Step 5 Hold the SIMM by the edges with your thumb and index finger and lift it out of the socket. Place the removed SIMM in an antistatic bag to protect it from ESD damage.

Step 6 Repeat Step 2 through Step 5 for each main memory SIMM card.

Proceed to the next section, "Installing Main Memory SIMMs."

Installing Main Memory SIMMs

Take the following steps to install main memory SIMMs:


Step 1 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the upper right corner of Figure C-1. All of the sockets should be empty. If not, follow the steps in the section "Removing Main Memory SIMMs" earlier in this chapter.


Caution   
Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be damaged by mishandling.

Step 3 Hold the SIMM with the polarization notch on the right and the component side away from you with the connector edge at the bottom. (See Figure C-2.)

Step 4 Beginning with the SIMM nearest the edge of the motherboard, insert the main memory SIMM card at a 45-degree angle and rock it into its vertical position (see Figure C-4), using the minimum amount of force required. When the SIMM is properly seated, the socket guide posts will insert through the alignment holes, and the connector springs will click into place.

Step 5 Ensure that each SIMM is straight and that the alignment holes (as shown in Figure C-4) line up with the plastic socket guides on the socket.

Figure C-4 Installing Main Memory SIMMs


Caution   
You will feel some resistance, but do not use excessive force on the SIMM and do not touch the surface components to avoid damaging them.

Step 6 Repeat Step 2 through Step 5 for each main memory SIMM.

If you are done with all SIMM replacement procedures, proceed to the section "Replacing Network Processor Modules" in the chapter "Configuring the Director Chassis."

Replacing Shared Memory SIMMs

Use the following procedures to replace shared memory SIMMs.

Removing Shared Memory SIMMs

Take the following steps to remove the shared memory SIMMs:


Step 1 Unplug the chassis power cord and network connections.

Step 2 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 3 Remove the chassis cover as described in the section "Accessing the Internal Components of the Director" in the chapter "Configuring the Director Chassis."

Step 4 Remove and safely store all the network processor modules present as described in the "Replacing Network Processor Modules" section in the chapter "Configuring the Director Chassis."

Step 5 Locate the shared memory SIMM card socket shown on the left of the motherboard. (See Figure C-1.)

Step 6 Turn the chassis so that the rear of the chassis is closest to you.

Step 7 The SIMMs are held in place at each end by small metal spring clasps. To remove a shared memory SIMM, push the two metal clasps apart. Angle the SIMM upward and pull it out. (See Figure C-4.)


Caution   
Do not exert pressure on the components on the SIMM surface because it might damage them. The sides of the SIMM must clear the metal clasps before the SIMM can be safely removed.

Step 8 Place the removed SIMM in an antistatic bag to protect it from ESD damage.

Step 9 Repeat Step 7 and Step 8 for each SIMM.

Step 10 Proceed to the next section, "Installing Shared Memory SIMMs."

Installing Shared Memory SIMMs

Take the following steps to install shared memory SIMMs:


Step 1 Unplug the chassis power cord and network connections.

Step 2 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 3 Remove the chassis cover as described in the section "Accessing the Internal Components of the Director" in the chapter "Configuring the Director Chassis."

Step 4 Find the shared memory SIMM card socket locations on the left of the motherboard (as aligned in Figure C-1 and Figure C-2). All the sockets should be empty. If not, remove the shared memory SIMMs following the procedures in the previous section "Removing Shared Memory SIMMs."

Step 5 Turn the chassis so that the side with the shared memory SIMM cards is closest to you.

Step 6 Hold the SIMM with the connector edge at the bottom, with the component side facing you, and the polarization notch on the left. (See Figure C-5.)

Figure C-5 Inserting Shared Memory SIMMs


Caution   
Handle SIMMs by the card edges only. SIMMs are sensitive components and can be shorted by mishandling.

Step 7 To insert a SIMM, angle it into position, then carefully push down and back on the edges, holding each edge so that it securely snaps into place. (See Figure C-5.) When the SIMM snaps into place, the two metal holders clip over the edge of the SIMM, and it sits horizontally.


Caution   
Avoid damage to the SIMMs and SIMM socket by handling them gently. The SIMMs are also sensitive to ESD damage.

Step 8 Check that the SIMM is straight and that the holes are aligned with the socket guide posts on the socket. (See Figure C-5.)

If you are done with all SIMM replacement procedures, proceed to the section "Replacing Network Processor Modules" in the chapter "Configuring the Director Chassis."

Replacing the Boot Helper Flash Memory SIMM

The boot helper image (RxBoot image) is stored in Flash memory.

You upgrade boot helper Flash memory by replacing the existing SIMM (labeled SYSTEM FLASH MEMORY 0), or by adding a second SIMM to the empty socket (labeled SYSTEM FLASH MEMORY 1).

Removing the Boot Helper Flash Memory SIMM

Take the following steps to remove the boot helper Flash memory SIMM:


Step 1 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 2 Locate the SIMM card socket labeled RxBoot Flash memory on the lower right corner of the motherboard. (See Figure C-1.)


Caution   
Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be damaged by mishandling.

Step 3 Pull the locking spring clips on both sides outward and tilt the SIMM free of the clips to lift the SIMM out of its socket. (See Figure C-6.)

Proceed to the next section, "Installing Flash Memory SIMMs."

Figure C-6 Removing the Boot Helper Flash Memory SIMM

Installing Flash Memory SIMMs

Take the following steps to add Flash memory SIMMs:


Step 1 On the motherboard, locate the Flash memory SIMM sockets. (See Figure C-1 and Figure C-2.)


Caution   
Handle SIMMs by the edges only. SIMMs are ESD-sensitive components and can be damaged by mishandling.

Step 2 Hold the SIMM with the polarization notch on the right and the component side away from you with the connector edge at the bottom.

Step 3 Referring to Figure C-7, insert the Flash memory SIMM at a 45-degree angle and rock it into its vertical position. (See Figure C-1 and Figure C-2.) When the SIMM is properly seated, the socket guide posts will insert through the alignment holes, and the locking springs will click into place. Use the minimum amount of force required.


Caution   
You will feel some resistance, but do not use excessive force on the SIMM and do not touch the surface components to avoid damaging them.

Step 4 Check the alignment of each SIMM to make sure that it is straight and that the alignment holes are lined up with the plastic socket guides.

If you have completed all memory upgrade procedures, proceed to the section "Replacing Network Processor Modules" in the chapter "Configuring the Director Chassis."

Figure C-7 Inserting Flash Memory SIMMs

Testing Your Boot ROM Installation

Test your installing by rebooting the system. When you power up a system in which one or more of the boot ROMs was incorrectly inserted, the system will not boot into the ROM monitor or the operating system mode.

If you suspect that your boot ROMs were inserted incorrectly, reopen the chassis, locate the affected boot ROM and remove it, straighten its pins, reinsert the boot ROM, and try booting the system again.


Caution   
The notch on the ROM must match the notch on the socket on the card. Installing the components backward will damage them.