Replacing SDRAM DIMMs on the motherboard

About replacing SDRAM DIMMs

This section provides the supported memory configurations for the chassis and the procedures for replacing the SDRAM DIMMs on the motherboard. Replacing the SDRAM DIMMs on the motherboard consists of the following procedures:

Removing an SDRAM DIMM
Installing an SDRAM DIMM

Supported memory configurations

The following table lists the supported memory configuration for the R100 chassis.

DIMM slots	Required memory configuration
J40, J41, J42, J43, J45, J46	3.3V, unbuffered, 6x512 MB SDRAM DIMMs

Caution
All DIMMs must be listed on the Network Appliance^TM Approved Parts List. Contact Network Appliance Sales to obtain this list. Unapproved DIMMs have not been tested for reliability and might cause system downtime.

Removing an SDRAM DIMM

To remove an SDRAM DIMM, complete the following steps.

Step	Action
1	Open the PCB carrier. Follow the procedure in Opening the PCB carrier.
2	Locate the DIMM that you want to remove.
3	Push apart the latches on either side of the DIMM to release the DIMM from its slot, as shown.
4	Pull the DIMM out of the slot.
5	Set the DIMM aside in an antistatic bag.

Installing an SDRAM DIMM

To install the SDRAM DIMM, complete the following steps.

Step	Action
1	Locate the DIMM slot for the DIMM you are installing.
2	Hold the DIMM by its top corners to avoid damaging the components.
3	Insert the DIMM straight into the slot. The DIMM fits tightly in the slot, but should go in easily. If not, realign the DIMM with the slot and try again. Caution Visually inspect the DIMM to verify that it is evenly aligned and fully inserted into the slot; otherwise, the edge connector on the DIMM does not make complete contact with the slot.
4	Push carefully, but firmly on the top edge of the DIMM until the latches snap into place.
5	Go to Closing the PCB carrier.