Specifications
34 Optimizing IBM Netfinity Servers for SAP R/3 and Windows NT
• The memory board contains four banks, arranged in 16 DIMM connectors and
supports four-way memory interleaving. See Figure 9 for the location of the
memory module banks and connectors on the memory board.
– Bank 0 connectors J2, J3, J4 and J5
– Bank 1 connectors J6, J7, J8 and J9
– Bank 2 connectors J10, J11, J12 and J13
– Bank 3 connectors J1, J15, J16 and J17
• Each bank contains connectors for four memory modules. Three
memory-module kits are available: 256 MB, 512 MB and 1024 MB.
– 256 MB Memory kit (4 x 64 MB DIMMs), part #94G7384
– 512 MB Memory kit (4 x 128 MB DIMMs), part #94G7385
– 1024 MB Memory kit (4 x 256 MB DIMMs), part #94G7386
• As a minimum, your server requires 64 MB memory modules in connectors J2,
J3, J4, and J5 in bank 0.
• To ensure proper server operation, you must maintain 4, 8, 12, or 16 memory
modules in your server.
• Up to 4 GB of memory can be installed in your server, with 256 MB memory
modules in all 16 connectors (J2 through J17). You must remove the four 64
MB modules that come standard with the system.
2.4.1 Memory Configuration Rules
Follow these rules when installing memory:
• All DIMMs modules installed in a bank must be the same speed and the same
size.
• Different banks can have different sized DIMMs installed.
• The memory modules connectors must be filled in sequence, which means
that you cannot use bank 0, leave bank 1 empty and use bank 3.
• The largest memory modules should be filled in the bank with the lowest
number (bank 0) and next largest ones in the next bank and so one. As an
example, if you have four 256 MB, four 128 MB and four 64 MB modules the
256 MB modules should be installed in bank 0, the 128 MB modules in bank 1
and the 64 MB modules in bank 2.
Windows NT 4.0 will not install if you have more than 3 GB of
memory installed in the system. You must first complete the
installation with less than 3 GB of memory and install Windows NT
Service Pack 3. After the service pack is installed, you can then
install up to 4 GB of memory.
Windows NT 4.0 Installation