Lenovo thinksystem SN850 7X15, Setup Manual

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Install a processor-heat-sink module
Processors are in the compute system boards that are accessed from the front of the server. The processor
and heat sink are removed together as part of a processor-heat-sink-module (PHM) assembly. PHM
installation requires a Torx T30 driver.
Note: If you are installing multiple options relating to the compute system board, the PHM installation should
be performed first.
Attention:
• Each processor socket must always contain a cover or a PHM. When removing or installing a PHM,
protect empty processor sockets with a cover.
• Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and
easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause
connection failures.
• Remove and install only one PHM at a time. If the system board supports multiple processors, install the
PHMs starting with the first processor socket.
• Do not allow the thermal grease on the processor or heat sink to come in contact with anything. Contact
with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage
components, such as electrical connectors in the processor socket. Do not remove the grease cover from
a heat sink until you are instructed to do so.
• Processors are static-sensitive components, handle them with extra care. See Handling static-sensitive
devices for more information.
Notes:
• PHMs are keyed for the socket where they can be installed and for their orientation in the socket.
• See http://www.lenovo.com/serverproven/ for a list of processors supported for your processor. All
processors on the system board must have the same speed, number of cores, and frequency.
• Before you install a new PHM or replacement processor, update your system firmware to the latest level.
See “Update the firmware” on page 62 .
• Installing an additional PHM can change the memory requirements for your system. See ThinkSystem
SN850 Compute Node Memory Population Reference for a table of processor-to-memory relationships.
• Optional devices available for your system might have specific processor requirements. See the
documentation that comes with the optional device for information.
Before installing a PHM:
Note: The PHM for your system might be different than the PHM shown in the illustrations.
1. Read “Installation Guidelines” on page 26 to ensure that you work safely.
2. Remove the compute node cover (see “Remove the compute node cover” on page 29 for instructions).
3. Remove the air baffle (see “Remove the air baffle” on page 30 for instructions).
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ThinkSystem SN850 Compute Node Setup Guide