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Fan CRUs
Fault LEDs
Latches and handles
Attention: Do not run the storage server without adequate ventilation and cooling,
because it might cause damage to the internal components and circuitry.
Both fan units must always be in place, even if one is not functioning properly, to
maintain proper cooling.
Use the following procedure to replace a hot-swap fan:
1. Check the LEDs on the back of the storage server.
2. If the amber Fault LED is on, remove the fan CRU that has failed.
3. Install the new fan unit.
4. Check the LEDs.
Working with hot-swap power supplies
The storage server power system consists of two power supply CRUs. The power
supply CRUs provide power to the internal components by converting incoming ac
voltage to dc voltage. One power supply CRU can maintain electrical power to the unit
if the other power supply is turned off or malfunctions. The power supply CRUs are
interchangeable (by reversing the locking levers).
The two fan CRUs are hot-swappable and redundant.
These amber LEDs light when a fan failure occurs.
Use the latches and handles to remove or install the fan CRUs.
a. Slide the latch to unlock the fan CRU.
b. Use the handle (black knob) to pull the fan from the storage server.
a. Place the fan CRU in front of the fan slot.
b. Hold the latch open, and slide the fan all the way into the slot. If the fan does
not go into the bay, rotate it 180 ° . Ensure that the latch is on the side closest
to the center of the storage server.
c. Release the latch. If the lever remains open, pull back on the fan slightly, and
then push it in again until the latch snaps into place.
The Fault LEDs turn off after a few seconds; if they remain on, refer to
"Troubleshooting" on page 65.
Chapter 5. Installing and replacing components
47
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