Installing Memory-Module Kits - IBM 6000R - Netfinity - 8682 Hardware Maintenance Manual

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 pro-
grams 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 mod-
ules (DIMMs).
Notes:
1. The DIMM options available for the server are 128 MB,
256 MB, 512MB, and 1 GB. The server supports a min-
imum 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 mem-
ory 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 on page 79.
4. All the DIMMs installed in a bank must be the same
size, speed, type, and technology. You can mix com-
patible 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 on
page 79.
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 100MHz, 72-bit, registered,
synchronous, x4 SDRAM configuration DIMM memory
is supported for the 128MB, 256 MB, 512 MB, and 1GB
DIMMs.
8. Installing or removing DIMMs changes the configura-
tion 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 sys-
tem displays a message indicating that the memory
configuration has changed. Start the Configura-
tion/Setup Utility program and select Save Settings.
See "Configuring the server" on page 43 for more infor-
mation.
Install the DIMMs in the order provided in Table 11 on page
79.
78
Netfinity 6000R Type 8682 Models 1RY, 2RY