NEC Express5800 140Rd-4 User Manual page 291

Removal
R emove the DIMM in the following procedure.
IMPORTANT:
metal frame of the server to discharge static electricity from your body before handling the DIMM.
Do n ot touch the DIMM terminals or on-board parts by a bare hand or place the DIMM directly on
the d esk. For static notes, see the section "Anti-static Measures" described earlier.
NOTE:
To remove the failed DIMM, check the error message appearing in POST or ESMPRO to
identify the DIMM socket (group) in which the failed DIMM is installed.
1.
See the s ection "Preparing for Installation and Removal" described earlier to prepare.
2.
Unlock t he front bezel with the security key, and remove the front bezel.
3.
Re ove the memory slot cover, and then remove the memory board on which the DIMMs to be removed are m
installed.
NOTE:
The error lamp corresponding to the failing DIMM goes on.
4.
Open the levers at both sides of the socket from which you remove the DIMM. (1).
The DIMM is un locked and ready for removal. (2)
5.
Install the memory board.
6.
Install the memory slot cover and front bezel.
7.
Power on the server and verify that POST displays no
If POST displays an error message, take a note on
Start the SETUP and select [Advanced] → [Memory Configuration] → [Memory Re st] → [Enabled] to clear the
8.
error information of the removed DIM
indicating DIMM error. (See Chapter
9.
Se ct "Yes" for [Reset Configuration Data] on the Advanced le
Th s setting is required to change the hardware configuration data. See Chapter 4 for detail i
Memory Mi rroring Feature
The me mory mirroring feature places a memory board as spare memory in standby state. If the current memory board
encoun ters a uncorrectable error, the memory mirroring feature switches to the standby memory board. When this feature is n
used, the curr ent memory board and the standby memory board should be combined. Available combinations are:
Mir roring with memory boards 1 and 2
M roring with a pair of memory boards 1 and 2 and a pair of memory boards 3 and 4 ir
To enable the memory mirroring feature, the combined memory boards must have the DIMM of same capacities.
T he table below shows combinations of m
Memory board 1
A 2GB (1GB*2)
B 8GB (2GB*4)
C 4GB (1GB*4)
The DIMM is extremely sensi tive to static electricity. Make sure to touch the
the message and see the POST er
M. Then select [Server] → [Clear FRU LED] → [Yes] to turn off the LED
4 for details.)
emory boards installed.
Memory b oard 2 Memory board 3
2GB (1GB*2) 2GB (1GB*2)
8GB (2GB*4) 8GB (2GB*4)
4GB (1GB*4) –
error messages.
ror messages listed in Chapter 8.
te
menu.
Memory board 4
2GB (1GB*2)
8GB (2GB*4)
–
9-43
s.