Planning: About Your Storage Array 31Power Supply and Cooling Fan FeaturesThe MD3600f Series storage array includes two integrated, hot-swappablepower supply/cooling fan modules. Both modules must be installed to ensureproper cooling. The system requires at least one of the cooling fans tofunction to avoid overheating.A power supply/cooling fan module can be replaced without powering downthe system. For information on removing and installing the modules, see"Power Supply/Cooling Fan Module" on page 257.CAUTION: A power supply/cooling fan module can be removed from a powered-on enclosure for a maximum period of 5 minutes. Beyond that time, the system mayautomatically shut down to prevent damage.Drive-Status Indicator Pattern ConditionOff The physical disk is:• not yet discovered by the host server• is spun down for removal• not supported for the RAID controllermodule or is not in the physical disk slotNOTE: The drive status indicator remainsoff until all hard drives are initialized aftersystem power is turned on. Drives are notready for insertion or removal during thistime.Steady green Physical disk is onlineGreen flashing (On 250 ms, Off 250 ms) Physical disk is being identifiedGreen flashing (On 400 ms, Off 100 ms) Physical disk rebuildingAmber flashing (On 150 ms, Off 150 ms) Physical disk failedFlashing green, amber, and Off (green On500 ms, amber On 500 ms, Off 1000 ms)Physical disk failure predicted (SMART)Flashing green, amber, and Off (green 3seconds, amber 3 seconds, and Off 3seconds)Physical disk rebuild aborted
