Fan modules

This information describes the fan modules present in the IBM c-type SAN switches and directors.

One fan can fail without affecting the thermal performance of the system. Redundant fan controllers and other internal mechanisms are in place to ensure that any single fan module does not go down.

Any single fan can fail and the system continues to operate under all conditions. Two fan failures might cause alarms from ASIC when temperature exceeds the threshold. At 86-degrees F (30° C) or less, a single fan module can be removed. The system can continue to operate up to 72 hours to allow for replacement of a failed fan module. When the temperature exceeds the threshold, the device automatically shuts down in 3 minutes.