Dimms - IBM eServer xSeries 440 Installation Manual

DIMMs

This section describes how to install and remove DIMMS. Before preforming any of
the procedures in this section, read "Safety" on page v, "Handling static-sensitive
devices" on page 4, and the memory considerations on page 18.
DIMM considerations:
v IBM periodically makes updates available to provide enhancements to the
v Your server comes with four 512 MB DIMMs installed in slots 1, 3, 5, and 7 in the
v When installing or removing DIMMs, it must be done in banks of four and in the
v Each DIMM in an individual bank must be of the same size and clock speed to
18
xSeries 440: Installation Guide
standard features of your server. Currently, your xSeries 440 supports the
Memory Mirroring and Memory ProteXion
™
Memory technology. However in the future, IBM might also support the hot-swap
feature of the Active Memory technology. Be sure to check the IBM support web
site occasionally to ensure that you have the most current levels of system
software installed.
SMP Expansion Module. When installing additional memory modules, you must
install four DIMMS at a time and in the order described in this section, using the
instructions in the "Installing DIMMS" procedure on page 19 to maintain
performance. See the ServerProven
list of memory modules for use with your server.
following order:
– Bank 1 = DIMM connectors 1, 3, 5, 7
– Bank 2 = DIMM connectors 9, 11, 13, 15
– Bank 3 = DIMM connectors 2, 4, 6, 8
– Bank 4 = DIMM connectors 10, 12, 14, 16
Note: The illustrations in this document might differ slightly from your hardware.
Bank 1 (standard)
Bank 3
ensure the server will operate properly. For example, your server came with four
512 MB DIMMs installed in bank 1. In each of the other banks, you can install
four 512 MB, or four 1 GB DIMMs.
™
features of theActive
®
list at http://www.ibm.com/pc/compat for a
Bank 2
DIMM error
indicators are
built into
Bank 4 each handle.