Acer R920 Series manual Installing and removing Dimm modules, Dimm module configuration guidelines

77

Installing and removing DIMM modules

The server’s memory board supports eight DIMM slots. Each slot supports 1 GB, 2 GB, and 4 GB DDR2-667 (PC2-5300) FBDIMM modules. The server’s maximum memory capacity is 128 GB.

DIMM module configuration guidelines

Observe the following guidelines when replacing or installing DIMM modules to the memory boards.

•The system supports up to four memory boards. At least one memory board and two DIMMs must be installed for the server to function. Each memory board must have a minimum of two DIMMs installed.

•DIMMs must be installed in pairs. For example, DIMM slots 1 and 2, DIMM slots 3 and 4, DIMM slots 5 and 6, DIMM slots 7 and 8

•DIMMs in the same memory board must be identical in size, speed, and vendor.

•The system does not support mixed-sized DIMMs or DIMMs from different vendors within the same memory board.

Warning! Functionality issues may be encountered if mixed memory types are installed on the memory board.

•The system does not support combination of single-rank with dual- rank memory.

•Use only DDR2 FBDIMMs. Other type of DIMMs will not fit into the socket. Attempts to force a non-DDR2 FBDIMM into a socket will damage and/or the socket or the DIMM.

•Hold DIMMs only by the edges. Do not touch the components or gold edge connectors.

•Install DIMMs with gold-plated edge connectors only.

Important: Follow the DIMM module “FBDIMM module population order” section on page 167 when installing and removing DIMMs.