IBM 866011U - Netfinity 5500 - 8660, Hardware Maintenance Manual

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Memory-module kits
Note
If installing a 256MB Registered memory module in
the server, ensure the jumper is installed on pins 2
and 3 of Jumper Block J12 on the processor board.
Adding memory to the server is an easy way to make
programs run faster. You can increase the amount of
memory in the server by installing options called
memory-module kits. Each kit contains one
industry-standard, dual-inline memory module (DIMM).
The server uses a noninterleaved memory configuration.
The server comes with a memory-module installed in
connector J1, the connector nearest the rear of the server.
Install additional memory modules in connectors J2, J3,
and J4, in that order. If you mix DIMM sizes, install the
largest sized DIMM in connector J1, the next largest sized
DIMM in connector J2, and so forth.
Notes
1. The memory-module kit sizes available for the
server are 64 MB, 128 MB, and 256 MB. The
server supports a minimum of 128 MB and a
maximum of 1 GB of system memory.
2. Install only 3.3 V, 168-pin, 8-byte DIMMs. Only
100 MHz, 72-bit, unbuffered, synchronous, error
correcting code (ECC), x8 configuration DIMM
memory is supported for the 64 MB and 128 MB
DIMMs. Only 100 MHz, 72-bit, registered,
synchronous, ECC, x4 configuration DIMM
memory is supported for the 256 MB DIMMs.
3. Mixing of DIMM types (registered and unbuffered)
is not supported. You can install 64 MB
unbuffered and 128 MB unbuffered DIMMs in the
same system, but neither 64 MB unbuffered nor
128 MB unbuffered DIMMs can be installed in a
system with 256 MB registered DIMMs.
4. Installing or removing memory modules changes
the configuration information in the server.
Therefore, after installing or removing a DIMM,
save the new configuration information in the
Configuration/Setup program. When you restart
the server, the system displays a message
indicating that the memory configuration has
changed. Start the Configuration/Setup program
and select Save Settings. See “Using the
Configuration/Setup Utility Main menu” on
page 91 for more information.
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Netfinity Server HMM