IBM N7800, Hardware And Service Manual

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If your system is... Description
An HA pair Complete the following substeps after the
target node is displaying the
Waiting for
Giveback
message:
1. Enter the following command from the
partner node:
cf giveback
The target node takes back its storage,
completes booting up, and then reboots
and is again taken over by the partner
node.
2. Enter the following command from the
partner node:
cf giveback
The target node takes back its storage
and completes booting up with the
restored configuration.
Completing the replacement process
Return the failed part to IBM. Contact IBM Service and Support at 1-800-IBM-SERV
(1-800-426-7378) for more information on the return procedure.
Replacing a fan module in an N7000 series system
To replace a fan module, you must perform the following tasks in order.
About this task
The fan module is hot-swappable and can be replaced without interrupting service.
Removing a fan module
You can remove a fan module without powering down the system.
About this task
Attention: You must replace the fan module within two minutes of removing it
from the chassis. System airflow is disrupted and the controller module shuts
down after two minutes to avoid overheating. In high-availability configurations, a
takeover occurs.
Procedure
1. If you are not already grounded, properly ground yourself.
2. Remove the bezel (if necessary).
3. Locate the fan module that needs replacing. You can identify it by the blinking
LED on the fan module FRU, or through messages on the LCD or console.
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IBM System Storage: N7000 Series Hardware and Service Guide