Dimms - IBM eServer xSeries 440 Installation Manual

DIMMs

This section describes how to install and remove DIMMS. Before performing any of
the procedures in this section, read "Safety" on page v, "Handling static-sensitive
devices" on page 6, and the following DIMM considerations.
DIMM considerations:
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•
•
•
IBM periodically makes updates available to provide enhancements to the
standard features of your server. Currently, your xSeries 440 supports the
Memory Mirroring and Memory ProteXion features of the Active 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.
Your server comes with a minimum of four 512 MB DIMMs installed in slots 1, 3, 5,
and 7 in the SMP Expansion Module. When installing additional DIMM 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 26 to maintain
performance. See the ServerProven list at http://www.ibm.com/pc/compat for a list
of memory modules for use with your server.
When installing or removing DIMMs, it must be done in banks of four and in the
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
Bank 1 (standard)
Bank 3
Each DIMM in an individual bank must be of the same size and clock speed to
ensure the server will operate properly.
Bank 2
DIMM error
indicators are
built into
each handle.
Bank 4
Chapter 2. Installing options
25