Servicing Notes; Replacing A Failed Controller Fan - IBM Netfinity FASt T500 User Reference

Servicing notes

Consider the following when servicing the controller fan:
• Both fans failing simultaneously in the controller fan is unlikely. Such a failure will
cause either one or both controllers to overheat. Under these circumstances, the amber
controller light on the front panel might turn on. Shut down the controller unit
immediately and let the unit cool to room temperature and then replace the controller
fan.
• You can hot swap, or replace, the controller fan, as long as you complete the exchange
within 15 minutes. The time limit applies to the total time that the fan is out of the
chassis. The time begins when you remove the failed controller fan and ends when you
install the new one. This does not include the time it takes to perform the entire
procedure (for example, checking the indicator lights).
• If a controller fan fails, the fault light on the controller fan glows. For more information
about indicator lights, see
• If you replace the controller fan and still experience problems, the controller unit might
have defective components or connections. Check the storage-management software
for indications of other component failures.

Replacing a failed controller fan

When instructed by the storage-management software, replace a controller fan.
Attention: When you handle electrostatic discharge (ESD) sensitive devices, take
precautions to avoid damage from static electricity. For details about
handling ESD-sensitive devices, refer to the following Web site and use a
search term of ESD: http://www.ibm.com/
1 Unpack the new controller fan.
2 Remove the controller unit bezel, as shown in
Attention: To prevent damage to the controller unit components, do not operate the
controller unit without adequate ventilation to the controllers. If it will take
longer than 15 minutes to replace the controller fan, you must shut down the
controller unit to prevent it from overheating. The time limit applies to the
total time that the fan is out of the chassis. For more information, see
"Turning off the power" on page
40 IBM Netfinity FAStT500 RAID Controller Enclosure Unit User's Reference
"Checking the indicator lights" on page
Figure 6 on page
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