IBM HS20 Hardware Maintenance Manual - Page 51

Installing an additional microprocessor, Attention, Important, Notes

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a. Turn the DIMM so that the DIMM keys align correctly with the connector on the system board. Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, handle the clips gently. b. Insert the DIMM by pressing the DIMM along the guides into the connector. Make sure that the retaining clips snap into the closed positions. Important: If there is a gap between the DIMM and the retaining clips, the DIMM has not been properly installed. In this case, open the retaining clips and remove the DIMM; then, reinsert the DIMM. 8. If you have other options to install or remove, do so now; otherwise, go to "Completing the installation" on page 52. Installing an additional microprocessor The blade server comes with one or two microprocessors installed on the system board. The blade server supports two microprocessors. With two microprocessors, the blade server can operate as a symmetric multiprocessing (SMP) server. With SMP, certain operating systems and application programs can distribute the processing load between the microprocessors. If the blade server comes with one microprocessor, you can install a second microprocessor. To use SMP, obtain an SMP-capable operating system. For a list of supported operating systems and other options, go to http://www.ibm.com/pc/us/compat/. Attention: To ensure proper blade server operation when you install a second microprocessor, observe the following precautions: v Always install microprocessors that have the same cache size and type, the same clock speed, and identical internal and external clock frequencies (including system bus speed). v Make sure that the microprocessor with the lowest feature set is the startup (bootstrap) microprocessor installed in the microprocessor 1 socket (location U66). Notes: 1. For a list of microprocessors supported by the HS20 blade server, go to the ServerProven list at http://www.ibm.com/pc/us/compat/. 2. Thoroughly review the documentation that comes with the microprocessor, so that you can determine whether you need to update the blade server BIOS code. The latest level of BIOS code for the blade server is available from http://www.ibm.com/pc/support/ on the World Wide Web. 3. The microprocessor sockets in this server contain built-in termination for the microprocessor bus; therefore, no terminator card is required if a second microprocessor is not installed in microprocessor socket 2. However, for proper airflow, this socket must contain a microprocessor heat-sink filler, sometimes called a microprocessor baffle. 4. The microprocessor speeds are automatically set for this server; therefore, you do not need to set any microprocessor frequency-selection jumpers or switches. Figure 20 on page 42 depicts the installation of a second microprocessor on the system board. Chapter 5. Customer replacement units 41

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a.
Turn the DIMM so that the DIMM keys align correctly with the connector on
the system board.
Attention:
To avoid breaking the retaining clips or damaging the DIMM
connectors, handle the clips gently.
b.
Insert the DIMM by pressing the DIMM along the guides into the connector.
Make sure that the retaining clips snap into the closed positions.
Important:
If there is a gap between the DIMM and the retaining clips, the
DIMM has not been properly installed. In this case, open the retaining clips
and remove the DIMM; then, reinsert the DIMM.
8.
If you have other options to install or remove, do so now; otherwise, go to
“Completing the installation” on page 52.
Installing an additional microprocessor
The blade server comes with one or two microprocessors installed on the system
board. The blade server supports two microprocessors. With two microprocessors,
the blade server can operate as a symmetric multiprocessing (SMP) server. With
SMP, certain operating systems and application programs can distribute the
processing load between the microprocessors. If the blade server comes with one
microprocessor, you can install a second microprocessor.To use SMP, obtain an
SMP-capable operating system. For a list of supported operating systems and other
Attention:
To ensure proper blade server operation when you install a second
microprocessor, observe the following precautions:
v
Always install microprocessors that have the same cache size and type, the
same clock speed, and identical internal and external clock frequencies (including
system bus speed).
v
Make sure that the microprocessor with the lowest feature set is the startup
(bootstrap) microprocessor installed in the microprocessor 1 socket (location
U66).
Notes:
1.
For a list of microprocessors supported by the HS20 blade server, go to the
2.
Thoroughly review the documentation that comes with the microprocessor, so
that you can determine whether you need to update the blade server BIOS
code. The latest level of BIOS code for the blade server is available from
http://www.ibm.com/pc/support/ on the World Wide Web.
3.
The microprocessor sockets in this server contain built-in termination for the
microprocessor bus; therefore, no terminator card is required if a second
microprocessor is not installed in microprocessor socket 2. However, for proper
airflow, this socket must contain a microprocessor heat-sink filler, sometimes
called a microprocessor baffle.
4.
The microprocessor speeds are automatically set for this server; therefore, you
do not need to set any microprocessor frequency-selection jumpers or switches.
Figure 20 on page 42 depicts the installation of a second microprocessor on the
system board.
Chapter 5. Customer replacement units
41