Installing a memory module Адаптер thinkserver Lenovo Tower Server - TD100 (ThinkServer) - Type 4205

Страница: 42 из 98

background image

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/thinkserver.

 

v

   

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

   

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

 

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

 

or

 

more

 

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.

 

 

28

 

ThinkServer

 

TD100

 

and

 

TD100x

 

Types

 

4203,

 

4204,

 

4205,

 

4206,

 

6398,

 

6399,

 

6419,

 

and

 

6429:

 

User

 

Guide