NEC Express5800/120Re, User Manual

Page: 277 / 346

Upgrading Your Server 9-23
Installation Order
DIMMs must be populated in pairs and in the following order:
#5 and #6, #3 and #4, then #1 and #2.
IMPORTANT:
„
Install two additional DIMMs for each group
*1
because the server
uses interleaved memory. If DIMMs of different specifications
*2
are
installed in a bank, the server does not operate normally.
*1
A group is a unit of two DIMM slots. Each pair of DIMM slots
#5 and #6 (group #1), #3 and #4 (group #2), and #1 and #2
(group #3) in the figure is a bank. (The symbols are also
printed on the mother board.)
*2 DIMM specification is shown on the label attached to the
DIMM as follows:
Example: Frequency of 333 MHz, buffered, capacity of 512 MB,
raw address of 12 bits, column address of 10 bits, and
single side
333 / B / 512 / R12 C10 S
Single side
Column address
Raw address
Capacity
Buffered
Frequency
„
DIMMs must be populated in pairs and in the following order:
#5 and #6, #3 and #4, then #1 and #2.
„
Install DIMMs starting from the one having largest capacity.
„
Installed DIMMs must be the same speed and must all be registered.
„
Take a note of beep code pattern, and take appropriate action
according to the table listed earlier in "Beep Codes".
Mother board
FRONT
REAR
DIMM 1
DIMM 2
DIMM 3
DIMM 4
DIMM 5
DIMM 6
Group #3
Group #2
Group #1