IBM Flex System x440 Compute Node, Installation And Service Manual

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v
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v
See Chapter 5, “Parts listing, Types 7917 and 2584,” on page 51 to determine which components are customer
replaceable units (CRU) and which components are field replaceable units (FRU) that must be replaced only
by a trained service technician.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
Two or more compute nodes
cannot connect intermittently
1. Using the diagnostic tools that are provided by the device manufacturer, test
the I/O module that the devices are connected to.
2. Attempt to connect one compute node to the network first, and connect other
compute nodes, one by one, to try to isolate the problem.
3. Update the I/O module firmware, if necessary.
Note: Restarting the compute node and running POST diagnostics on the I/O
module might also help isolate the problem; however, this might have other
ramifications to the network.
Compute nodes are not
discovered by the IBM Flex
System Manager management
node or the CMM
intermittently
1. Make sure that the compute node is recognized by the IBM Flex System
Manager management node or the CMM. It might appear as an unknown
device in the chassis map. If it is not recognized, complete the following steps.
a. Remove the compute node and inspect both the compute node and the
back of the compute node bay to ensure that there is no physical damage
to connectors.
b. Move the compute node to another node bay.
c. Replace the compute node.
2. Make sure that the IBM Flex System Manager management node or the CMM
can ping the compute nodes. If they cannot, see “Cannot ping the IBM Flex
System Manager management node on the management network” on page
471.
3. If the compute nodes are in another chassis, make sure that you have the
proper software entitlements to manage that chassis with the IBM Flex System
Manager management node.
4. Check http://www.ibm.com/supportportal/ for any firmware updates that
might apply to this issue. You can view the release notes for a firmware
update to determine the issues that are addressed by the update.
5. Check http://www.ibm.com/supportportal/ for any service bulletins that are
related to network connectivity.
Memory problems
Use this information to solve memory problems.
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved.
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IBM Flex System x440 Compute Node Types 7917 and 2584: Installation and Service Guide