Acer Altos R920 Series, User Manual

Page: 92 / 206

3 System upgrade 74
Removing and installing a memory board
assembly
The server supports up to four memory boards. At least one memory
board and two FBDIMMs must be installed for the server to function.
Each memory board supports eight DIMM slots and a DIMM fault LED
for each FBDIMM that is used to report DIMM failures and error
conditions.
The supported memory board configurations are as follows.
• One memory board installed in memory board slot A, at the right
side of the system.
• Two memory boards, installed in memory board slots A and B, the
two boards at the right side of the system.
• All four memory boards, slots A, B, C, and D.
Important: Refer to the memory board installation order table
on page 166 when installing and removing memory boards.
Caution! Damage to the system occurs if power is not removed
from the system prior to removal or installation of memory
boards.
To remove the memory board assembly:
Note: If you remove a memory board from the server, you must
replace it with a replacement memory board.
1 Perform the pre-installation instructions described on page 39.