Servicing Notes; Replacing A Failed Storage Server Fan; Ds4400 Storage Server Airflow - IBM TotalStorage DS4400 User Manual

Note: Allow at least 60 cm (2 ft) of clearance in front of and behind the DS4400
Figure 39. DS4400 Storage Server airflow

Servicing notes

Consider the following when servicing the storage server fan:
v The storage server fan and the fan and communications module cooling system
v You can hot swap, or replace, the storage server fan, as long as you complete
v When a storage server fan fails, the fault light on the storage server fan is lit. For
v If you replace the storage server fan and still experience problems, the DS4400
v The storage server fan indicator light is also used to indicate a fan and

Replacing a failed storage server fan

When instructed by the storage-management software, replace the storage server
fan.
1. Remove the DS4400 Storage Server bezel, as shown in Figure 21 on page 23.
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IBM TotalStorage DS4400 Fibre Channel Storage Server: User's Guide
Storage Server for proper ventilation.
failing simultaneously in the storage server 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 be lit. If this occurs, shut down the
DS4400 Storage Server immediately and let the unit cool to room temperature
and then replace the storage server fan.
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 storage
server 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).
more information about indicator lights, see "Storage server indicator lights" on
page 28.
Storage Server might have defective components or connections. Check the
storage-management software for indications of other component failures.
communications module failure. Be sure to check the storage server fan and fan
and communications module before calling for service.