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Chapter 7. Installing, removing, and replacing compute node
components
Use this information to install, remove, and replace customer replaceable units (CRUs) and optional devices
in the compute node.
See Chapter 5 "Parts listing, Types 2585 and 7906" on page 55 to determine whether a component is a
consumable part, structural part, Tier 1 CRU, or Tier 2 CRU.
For information about the terms of the warranty and getting service and assistance, see the Warranty
Information document.
Installing an optional device
Some compute node components are available as both optional devices and replaceable components. The
installation procedure is the same for the optional device and the replaceable component.
Installation guidelines
Before you remove or replace a CRU or install an optional device, read the following information:
• Before you begin, read "Safety" on page iii and "Handling static-sensitive devices" on page 638. This
information will help you work safely.
• When you install your new compute node, take the opportunity to download and apply the most recent
firmware updates. This step will help to ensure that any known issues are addressed and that your
compute node is ready to function at maximum levels of performance.To download the latest firmware
and device drivers, go to http://www.ibm.com/support/ fixcentral and select Flex System x220 Compute
Node.
• Observe good housekeeping in the area where you are working. Place removed covers and other parts
in a safe place.
• Back up all important data before you make changes to hard disk drives.
• Before you remove a compute node from the Flex System chassis, you must shut down the operating
system and turn off the compute node. You do not have to shut down the chassis itself.
• Blue on a component indicates touch points, where you can grip the component to remove it from or
install it in the compute node, open or close a latch, and so on.
• For a list of supported optional devices for the compute node, see http://www.lenovo.com/ serverproven/.
System reliability guidelines
Use these guidelines to ensure that the compute node meets the cooling and system reliability requirements:
• To ensure proper cooling, the Flex System chassis is not operated without a
compute node or node bay filler in each node bay. See "Flex System Enterprise
Chassis Types 8721, 8724, and 8725: Installation and Service Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.8721.doc/product_
page.html for additional information.
• Each microprocessor socket always contains a socket cover and heat-sink filler or a microprocessor and
heat sink. If the compute node has only one microprocessor, it must be installed in microprocessor
socket 1.
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Troubleshooting
