Bull NovaScale R422-E1, Installation And User Manual

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5-8
N
ovaS
c
ale R422-E1/R422-INF-E1 Installation and User's Guide
5-6 Installing Memory
Memory support
The NovaScale R422-E1/R422-INF-E1 serverboard has eight 240-pin DIMM
sockets that can support up to 64 GB of ECC FBD (Fully Buffered DIMM) DDR2-
800/667/533 SDRAM (for a total of 128 GB in the system). The memory scheme is
interleaved, so you must populate two slots at a time, beginning with slot 1A and
2A, then slots 3A and 4A, etc. on each serverboard. See chart below for optimizing
your DIMM installation.
Installing memory modules
Insert each memory module vertically. Pay attention to the notches along the bottom
of the module to prevent inserting it incorrectly. Gently press down on the DIMM
module until it snaps into place in the slot (see Figure 5-3).
!
CAUTION! Exercise extreme care when installing or removing
DIMM modules to prevent any possible damage.
To Install: Insert module vertically and press down until it snaps into place. Pay attention to the bottom
notches.
To Remove: Use your thumbs to gently push each release tab outward to free the DIMM from the
slot.
Figure 5-3. DIMM Installation
Note: Notch
should align
with its
receptive point
on the slot
Notch
Notch
Release
Tab
Release
Tab
Optimized DIMM Configurations
Branch 0 Branch 1
Number of
DIMMs Bank 1
(Channel 0) Bank 2
(Channel 1) Bank 3
(Channel 2) Bank 4
(Channel 3)
2 DIMMs 1A --- 2A --- --- --- --- ---
4 DIMMs 1A --- 2A --- 3A --- 4A ---
6 DIMMs 1A 1B 2A 2B 3A --- 4A ---
8 DIMMs 1A 1B 2A 2B 3A 3B 4A 4B
Notes: i. DIMM slot# specified = DIMM slot to be populated; “---“ =
unpopulated DIMM slot. ii. Use the memory modules of the same speed
and type on a motherboard. iii. Interleaved memory is supported when
pairs of DIMM modules are installed. To optimize memory performance,
please populate pairs of memory modules in both Branch 0 and Branch 1.
iv. For memory to work properly, you need to follow the restrictions listed
above.