Lenovo ThinkServer TD200x Bedienungsanleitung PDF herunterladen (Seite 102)

v The server supports 1 GB, 2 GB, and 4 GB DIMMs, with a minimum of 1 GB and

a maximum of 64 GB of system memory.

For 32-bit operating systems only: Some memory is reserved for various

system resources and is unavailable to the operating system. The amount of

memory that is reserved for system resources depends on the operating system,

the configuration of the server, and the configured PCI devices.

v The maximum operating speed of the server is determined by the slowest DIMM

in the server.

v The server can operate in two major modes: mirroring and independent channel

modes.

Independent channel mode

The server requires at least one installed DIMM per microprocessor. The server

comes with a minimum of two 1 GB DIMMs, installed in connectors 3 and 6.

Connector 3 (in channel 0) and connector 6 (in channel 1) are the farthest

connectors from microprocessor 1 in those channels. When you install additional

DIMMs, install them in the order shown in Table 6, to maintain server performance.

Note: If you have configured the server to use memory mirroring, do not use the

order shown in this table; go to Table 8 on page 88 and use the installation order

shown there.

Table 6. DIMM installation sequence for independent channel mode

Installed microprocessors DIMM connector population sequence

Microprocessor 1 3, 6, 8, 2, 5, 7, 1, 4

Microprocessor 2 11, 14, 16, 10, 13, 15, 9, 12

Memory mirroring mode

Memory-mirroring mode replicates and stores data on two pairs of DIMMs within

two channels simultaneously. If a failure occurs, the memory controller switches

from the primary pair of memory DIMMs to the backup pair of DIMMs. You must

enable memory mirroring through the Setup Utility. For details about enabling

memory mirroring, see “Using the Setup Utility” on page 104. When you use the

memory mirroring feature, consider the following information:

v When you use memory mirroring, you must install a pair of DIMMs at a time.

One DIMM must be in channel 0, and the mirroring DIMM must be in the same

connector in channel 1. The two DIMMs in each pair must be identical in size,

type, rank (single, dual, or quad), and organization. They do not have to be

identical in speed. The channels run at the speed of the slowest DIMM in any of

the channels. See Table 8 on page 88 for the DIMM connectors that are in each

pair.

v Channel 2, DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring

mode.

v The maximum available memory is reduced to half of the installed memory when

memory mirroring is enabled. For example, if you install 64 GB of memory, only

32 GB of addressable memory is available when you use memory mirroring.

The following illustration shows the memory channel interface layout with the DIMM

installation sequence for mirroring mode. The numbers within the boxes indicate the

DIMM population sequence in pairs within the channels, and the numbers next to

the boxes indicate the DIMM connectors within the channels. For example, the

86 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Installation and User Guide

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 213 214

Kommentare zu diesen Handbüchern

Keine Kommentare

Lenovo ThinkServer TD200x Bedienungsanleitung Seite 102

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Computerhardware Lenovo ThinkServer TD200x