System information

Chapter 1
Overview and Common Procedures—Server Upgrade
Memory DIMMs
51
To install DIMMs, perform the following steps:
NOTE If you are installing 4 GB DIMMs, eight DIMMs must be installed in the first two quads and
system firmware must be upgraded before DIMM installation.
Step 1. Turn off the system and disconnect all cables.
CAUTION Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions could result in damage to the server.
To ensure that memory modules are not damaged during removal or installation,
power off the server and unplug the power cord from the AC power outlet. Wait until
the LED on the back of the power supply turns off before removing or installing
memory.
Step 2. Remove the top cover. (See “Removing the Top Cover” on page 20.)
Step 3. Remove the memory airflow guide. (See “Removing the Memory Airflow Guide” on page 26.)
Step 4. Locate the socket/slot into which the DIMM will be installed. Holding the memory module by its
left and right edges, insert the module into the socket.
NOTE The memory modules are keyed and can only be inserted in one direction. When the
module is correctly seated, the retainer clips will return to their fully upright
position.
Step 5. Evenly push down firmly on each end of the DIMM until it seats in the socket. Close the extraction
levers.
Figure 1-41 Inserting DIMM into Connector