Removing And Replacing Memory Dimms; Removing Memory Dimms; Installing Memory Dimms; Supported Dimm Sizes - HP Integrity rx4640 Service Manual

Removing and Replacing Memory DIMMs

Memory DIMMs are located on the memory extender board.
WARNING!
from the server prior to removing or replacing memory DIMMs.
Voltages are present at various locations within the server whenever an AC power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION:
follow ESD safety precautions could result in damage to the server.

Removing Memory DIMMs

To remove server memory, follow these steps:
1. If rack mounted, slide the HP server out from the rack until it stops. See
Server From the Rack" (page
NOTE:
HP server from the rack.
2. Remove the front bezel. See
3. Remove the front cover. See
4. Remove the memory extender board. See
5. Identify the DIMM to be removed and push the appropriate extraction levers found on
either side of the DIMM slot outward to the open position. The DIMM ejects from the slot.
6. Remove the DIMM from the slot.

Installing Memory DIMMs

The HP Integrity rx4640 server comes with a 16 DIMM memory extender board that is minimally
configured with 1 GB of memory (four 256 Mb DIMMs loaded in quad 0 [slots 0A, 0B, 0C, and
0D]). For the slot locations on the 16 DIMM memory extender board, see
An optional 32 DIMM memory extender board is available to replace the 16 DIMM memory
extender board and must also be minimally configured with 1 GB in quad 0. For the slot locations
on the 32 DIMM memory extender board, see
You can insert additional DIMMs into both 16 and 32 DIMM boards. When adding DIMMs, you
must use a minimum of four like sized DIMMs in the next available quad. DIMMs must be loaded
in quads with qualified modules. Memory is protected by data ECC, and the hardware
implementation supports chip spare.

Supported DIMM Sizes

Supported DIMM sizes are 256 MB, 512 MB, 1 GB, 2 GB, or 4 GB. Dissimilar DIMM sizes can be
used across the entire extender board, but all four DIMMs in each quad must match. For cooling
purposes, DIMM fillers must be used in some unused slots.

DIMM Slot Fillers

Both the 16 and 32 DIMM extender boards have DIMM slot filler boards placed over all unfilled
DIMM slots. As you fill DIMM quads with additional memory you must remove the DIMM slot
fillers covering the affected slots. All remaining DIMM fillers in unused slots must remain in
place to maximize internal cooling. For slot filler requirements for the 16 and 32 DIMM memory
extender boards, see
Ensure that the server is powered off and all power sources have been disconnected
Observe all ESD safety precautions before attempting this procedure. Failure to
31).
If desired, the processor extender board may be removed without removing the
"Removing the Front Bezel" (page
"Removing the Front Cover" (page
Table 4-2 and
"Removing the Memory Extender Board" (page
Figure 4-10.
Table 4-4.
Removing and Replacing Memory DIMMs
"Extending the
34).
35).
Figure 4-9.
37).
39