Replacing A Memory Module - Lenovo ThinkServer TS200 Hardware Maintenance Manual

4. Install the side cover (see "Installing the side cover" on page 143).
5. Lock the side cover.
6. Reconnect the external cables and power cords; then, turn on the attached devices and turn on the server.

Replacing a memory module

Use the following procedures to replace a memory module.
The following notes describe the types of dual inline memory modules (DIMMs) that the server supports and
other information that you must consider when you install DIMMs (see "System-board internal connectors"
on page 131 for the location of the DIMM connectors):
• The server supports industry-standard, 1066 or 1333 MHz, PC3-10600R-999 (single-rank or dual-rank)
double-data-rate 3 (DDR3), registered, synchronous dynamic random-access memory (SDRAM) dual
inline memory modules (DIMMs) with error correcting code (ECC). See http://www.lenovo.com/thinkserver
and click the Options tab for a list of supported memory modules for the server.
• The maximum amount of memory that the server supports is dependent on the type of memory that you
install in the server. See "Unbuffered DIMMs (UDIMMs)" on page 148 and "Registered DIMMs (RDIMMs)"
on page 149 for more information.
• The amount of usable memory is reduced, depending on the system configuration. A certain amount
of memory must be reserved for system resources. To view the total amount of installed memory and
the amount of configured memory, run the Setup utility. For additional information, see "Using the
Setup Utility" on page 255.
• The maximum operating speed of the server is determined by the slowest DIMM in the server.
• If you install a pair of DIMMs in DIMM connectors 2 and 5, the size and speed of the DIMMs that you
install in DIMM connectors 2 and 5 must match each other. How ever, they do not have to be the same
size and speed as the DIMMs that are installed in DIMM connectors 1 and 4.
• You can use compatible DIMMs from various manufacturers in the same pair.
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed.
• The specifications of a DDR3 DIMM are on a label on the DIMM, in the following format.
gggeRxff-PC3-wwwwwm-aa-bb-cc
where:
– ggg is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
– e is the number of ranks
1 = single-rank
2 = dual-rank
4 = quad-rank
– ff is the device organization (bit width)
4 = x4 organization (4 DQ lines per SDRAM)
8 = x8 organization
16 = x16 organization
– wwwww is the DIMM bandwidth, in MBps
8500 = 8.53 GBps (PC3-1066 SDRAMs, 8-byte primary data bus)
10600 = 10.66 GBps (PC3-1333 SDRAMs, 8-byte primary data bus)
– m is the DIMM type
.
Chapter 6 Replacing FRUs
147