IBM 43635gu User Guide - Page 38

Installing a memory module, System Summary

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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 you install DIMMs: v The server supports industry-standard, 667 MHz, unbuffered PC2-5300, double-data-rate 2 (DDR2) dual inline memory modules (DIMMs) error correcting code (ECC) memory. v The system board contains four DIMM connectors and supports two-way memory interleaving. v The DIMM options that are available for the server are 512 MB, 1 GB, and 2 GB. The server supports a minimum of 512 MB and a maximum of 8 GB of system memory. v The server comes with one 512 MB DIMM or two 512 MB DIMMs installed. Depending on the DIMM sizes that you select, the server also supports one, two or four DIMMs. The 512 MB DIMM option kit contains one DIMM; however, the 1 GB DIMM and 2 GB option kits each contain two DIMMs. v The amount of usable memory will be 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 Configuration/Setup Utility program and select System Summary from the menu. For additional information, see Chapter 3, "Configuring the server," on page 53. v For two-way memory interleaving, DIMMs must be installed in matched pairs. If one DIMM is installed in the DIMM 1 connector, when you install an additional DIMM, it must be installed in the DIMM 3 connector, and it must be the same size, speed, type, and technology as the DIMM in the DIMM 1 connector. You can mix compatible DIMMs from various manufacturers. If you install a second pair of DIMMs in the DIMM 2 and DIMM 4 connectors, they do not have to be the same size, speed, type, and technology as the DIMMs in the DIMM 1 and DIMM 3 connectors. However, the size, speed, type, and technology of the DIMMs that you install in the DIMM 2 and DIMM 4 connectors must match each other. v Install only 1.8 V, 240-pin, double-data-rate 2 (DDR2), 667 MHz, PC2-5300, unbuffered synchronous dynamic random-access memory (SDRAM) with error correcting code (ECC) DIMMs. These DIMMs must be compatible with the latest DDR2 667 MHz SDRAM unbuffered DIMM specification. For a list of supported optional devices for the server, see http://www.ibm.com/servers/eserver/ serverproven/compat/us/. v When you restart the server after you add or remove a DIMM, the server displays a message that the memory configuration has changed. 24 System x3200 Types 4362 and 4363: User's Guide

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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 you install
DIMMs:
v
The server supports industry-standard, 667 MHz, unbuffered PC2-5300,
double-data-rate 2 (DDR2) dual inline memory modules (DIMMs) error correcting
code (ECC) memory.
v
The system board contains four DIMM connectors and supports two-way memory
interleaving.
v
The DIMM options that are available for the server are 512 MB, 1 GB, and 2 GB.
The server supports a minimum of 512 MB and a maximum of 8 GB of system
memory.
v
The server comes with one 512 MB DIMM or two 512 MB DIMMs installed.
Depending on the DIMM sizes that you select, the server also supports one, two
or four DIMMs. The 512 MB DIMM option kit contains one DIMM; however, the 1
GB DIMM and 2 GB option kits each contain two DIMMs.
v
The amount of usable memory will be 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 Configuration/Setup Utility program and select
System Summary
from the menu. For additional information, see Chapter 3,
“Configuring the server,” on page 53.
v
For two-way memory interleaving, DIMMs must be installed in matched pairs.
If one DIMM is installed in the DIMM 1 connector, when you install an additional
DIMM, it must be installed in the DIMM 3 connector, and it must be the same
size, speed, type, and technology as the DIMM in the DIMM 1 connector. You
can mix compatible DIMMs from various manufacturers.
If you install a second pair of DIMMs in the DIMM 2 and DIMM 4 connectors,
they do not have to be the same size, speed, type, and technology as the
DIMMs in the DIMM 1 and DIMM 3 connectors. However, the size, speed, type,
and technology of the DIMMs that you install in the DIMM 2 and DIMM 4
connectors must match each other.
v
Install only 1.8 V, 240-pin, double-data-rate 2 (DDR2), 667 MHz, PC2-5300,
unbuffered synchronous dynamic random-access memory (SDRAM) with error
correcting code (ECC) DIMMs. These DIMMs must be compatible with the latest
DDR2 667 MHz SDRAM unbuffered DIMM specification. For a list of supported
optional devices for the server, see http://www.ibm.com/servers/eserver/
serverproven/compat/us/.
v
When you restart the server after you add or remove a DIMM, the server
displays a message that the memory configuration has changed.
24
System x3200 Types 4362 and 4363: User’s Guide