Lenovo TD100 Bedienungsanleitung PDF herunterladen (Seite 116)

Installing 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 installing

DIMMs:

v The server supports industry-standard, 1.8 V, 240-pin, 667 MHz, PC2-5300

double-data-rate 2 (DDR2), dynamic random-access memory (DRAM) with error

correcting code (ECC) fully buffered dual inline memory modules (DIMMs). These

DIMMs must be compatible with the latest DDR2 667 MHz DRAM fully buffered

DIMM specification. For a list of options for the server, see http://

www.lenovo.com/accessories.

v (ThinkServer TD100 models) The DIMM options that are supported for the server

are 512 MB, 1 GB , and 2 GB in x4 or x8 technology, single-rank or double-rank.

The server supports a minimum of 1 GB and a maximum of 32 GB (reduced to

16 GB in mirrored mode) of system memory.

v (ThinkServer TD100x models) The DIMM options that are supported for the

server are 1 GB, 2 GB, and 4 GB in x4 or x8 technology, single-rank or

double-rank. The server supports a minimum of 1 GB and a maximum of 48 GB

(reduced to 24 GB in mirrored mode) of system memory.

v The system board provides eight or 12 functional DIMM connectors (depending

on the model) and supports two-way memory interleaving when DIMMs are

installed in pairs.

Note: DIMM connectors 3, 6, 9, and 12 are not functional for ThinkServer

TD100 models. Do not install DIMMs in these four connectors and do not remove

the DIMM thermal baffles installed in these connectors unless you need to

replace the system board.

v When installing multiple pairs, always install the DIMMs with the most capacity in

the first slots. For example, if you had a pair of 1 GB DIMMs and a pair of 4 GB

DIMMs, you would install the 4 GB DIMMs in slots 1 and 4.

v The memory controller has four fully buffered DIMM channels that are organized

into two branches. Each branch has two channels and each channel controls two

DIMMs. DIMMs that are next to each other (for example, DIMM connector 1 and

DIMM connector 4) within the channels of a branch must be identical in size,

type, speed, and technology. However, the DIMMs in the connector above or

below each other within the channels of a branch do not have to be identical (for

example, the DIMMs in DIMM connector 1 and DIMM connector 2 do not have to

be identical). The following illustration shows how the memory controller is

organized into branches and channels with a pair of DIMMs installed in each

branch.

DIMM 2

DIMM 3

DIMM 1

DIMM 5

DIMM 6

DIMM 4

DIMM 8

DIMM 9

DIMM 7

DIMM 11

DIMM 12

DIMM 10

Memory Controller

Branch 0

Branch 1

Channel 0 Channel 1 Channel 2 Channel 3

v The server can operate in two major modes: mirroring and non-mirroring

(normal). The server can also operate in a single-channel mode when one DIMM

is installed.

98 ThinkServer TD100 and TD100x: Hardware Maintenance Manual

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 253 254

Lenovo TD100 Bedienungsanleitung Seite 116

Kommentare zu diesen Handbüchern