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d.
Press your thumbs down on the orange tabs on top of the latching mechanism and gently
push the controller module over the stop.
e.
Release your thumbs from the top of the latching mechanisms and continue pushing until the
latching mechanisms snap into place.
The controller module begins to boot as soon as it is fully seated in the chassis. Be prepared to
interrupt the boot process.
The controller module should be fully inserted and flush with the edges of the chassis.
Step 3.
Recable the system, as needed.
Step 4.
Return the node to normal operation by giving back its storage from the running node:
storage failover giveback -ofnode impaired_node_name
Note: This should be done when the impaired node shows "Waiting for giveback..."
Step 5.
If automatic giveback was disabled, reenable it:
storage failover modify -node local -auto-giveback true
Completing the replacement process
After you replace the part, you can return the failed part to Lenovo, as described in the RMA instructions
shipped with the kit.Contact technical support at
additional help with the replacement procedure.
P P r r o o c c e e d d u u r r e e
Step 1.
Recable the system storage and networking cables, as needed.
Step 2.
Reconnect the power supply.
a.
Open the power cable retainer and plug the power cable into the power supply.
b.
Plug the power cable into the power source.
Step 3.
Return the node to normal operation by giving back its storage from the running node: storage
failover giveback -ofnode impaired_node_name
Note: This operation need to be performed when the impaired node shows "Waiting for
giveback...".
Step 4.
If automatic giveback was disabled, reenable it: storage failover modify -node local -auto-
giveback true
Replacing the NVMEM battery
To replace an NVMEM battery in the system, you must remove the controller module from the system, open
it, replace the battery, and close and replace the controller module.
A A b b o o u u t t t t h h i i s s t t a a s s k k
All other components in the system must be functioning properly; if not, you must contact technical support.
Shutting down the impaired controller
You can shut down or take over the impaired controller using different procedures, depending on the storage
system hardware configuration.
Shutting down the impaired node
To shut down the impaired node, you must determine the status of the node and, if necessary, take over the
node so that the healthy node continues to serve data from the impaired node storage.
B B e e f f o o r r e e y y o o u u b b e e g g i i n n
ThinkSystem DM5100F Hardware Installation and Maintenance Guide
76
Lenovo Data Center Support
if you need the RMA number or
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