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Installing memory-module kits
The illustrations in this document might differ slightly from your hardware.
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 memory-module options.
You must install a bank of four matched dual-inline memory modules (DIMMs).
Notes:
1. The DIMM options available for the server are 128 MB, 256 MB, 512 MB, and
1 GB. The server supports a minimum of 512 MB (4 x 128MB) and a maximum
of 16 GB (16 x 1GB) of system memory.
2. When 4 GB of memory is installed in the server, the amount of usable memory
will be reduced depending on the system configuration. A certain amount of
memory must be reserved below 4 GB for system resources. A second
reduction in the usable memory is made when 16 GB of memory is installed.
3. The server comes with a minimum of 512 MB (4x128) memory installed in bank
1. When you install additional DIMMs, be sure to follow the DIMM population
sequence in Table 11..
4. All the DIMMs installed in a bank must be the same size, speed, type, and
technology. You can mix compatible DIMMs from various manufacturers.
5. All the banks do not have to contain DIMMs of the same size, speed, type, and
technology. You can mix compatible DIMMs from various manufacturers.
6. The memory board contains 16 DIMM connectors and utilizes 4-way memory
interleaving. See Table 11
The 4-way memory interleave technology in the server requires that you install
DIMMs in all four connectors in each populated bank.
7. Install only 3.3 V, 168-pin, 8-byte, 100 MHz, PCI, PC100-322-622R, registered
synchronous dynamic random-access memory (SDRAM) with error correcting
code (ECC), DIMMs. Only 100 MHz, 72-bit, registered, synchronous, x4 SDRAM
configuration DIMM memory is supported for the 128 MB, 256 MB, 512 MB, and
1 GB DIMMs.
8. Installing or removing DIMMs changes the configuration information in the
server. Therefore, after installing or removing a bank of DIMMs, you must save
the new configuration information using the Configuration/Setup Utility program.
When you restart the server, the system displays a message indicating that the
memory configuration has changed. Start the Configuration/Setup Utility
program and select Save Settings. See “Configuring the server” on page 33 for
more information.
Install the DIMMs in the order provided in Table 11
Table 11. DIMM installation order
Bank of 4 DIMMs Install DIMMs in these connectors:
Bank 1 (shipped as standard) J1, J5, J9, J13
Bank 2 J2, J6, J10, J14
Bank 3 J3, J7, J11, J15
Bank 4 J4, J8, J12, J16
The following illustration shows how to install memory on the memory board.
Installing options 63