56 Net finity 3500 -M20 – T ype 8657 Mod els 21 Y, 2 2Y, 31Y, 32Y ,
b. Insert the DIMM int o the connector by pressing on
one ed ge o f the DIMM and then on the other edge
of the DIMM. Be sure to press straight into the
connector. Be sure that the retaining clips snap
into the closed po sitions.
c. Make sure the retaining clips are in the closed
positi on. If a gap exis ts be tween the DIMM and
the retaining clips, the DIMM has not been prop-
erly installed. In this case, open the retaining clips
and remove the DIMM; then, reinsert the DIMM.
4. If you have other options to install or remove, do so
now; otherwise, go to “Installing the side cover” on
page 60.
Installing a microproces sor kit
The server comes with one microprocessor installed on t he
system board. If you install an additional microprocessor kit,
t he serv er ca n op er a te as a sym m et r ic mul tipr o ce ss ing
(SMP) server. With SMP, certain oper ating sy stems and
application pr ograms can distribute the processin g loa d
between the microprocessors. This enha nces pe rformance
f or dat ab as e an d poin t- of -sa le app lic a t io ns , int eg r at ed man -
ufacturing solutions, and other applications.
Notes:
1. Before y ou ins tall a new microprocessor, review the
documentation tha t comes with the microproces sor, so
that you can determine whether you need to update the
server basic input/output system (BIOS). The latest
level of BIOS for the server is available through the
World Wide Web.
2. Obtain an SMP-capable operating system (optional).
For a list of suppor ted operating systems, see
http://www.ibm.com/pc/us/compat/ on the World Wide
Web.
3. The server comes with one microprocessor installed in
microprocessor connector U12. Thi s is th e startup
(boot) microprocessor. If you install a microproc essor
in microprocessor connector U11, that one becomes
the startup processor and the microprocessor installed
in conne c tor U 12 is the application processor.
4. The illustrations in this document might differ slightly
from the server.