Working With Hot-Swap Power Supplies (Dual-Controller Models Only); Removing A Fan - IBM TotalStorage DS4300 Installation And User Manual

Attention:
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.
Figure 62. Removing a fan
3. Install the new fan unit.
4. Check the LEDs.

Working with hot-swap power supplies (dual-controller models only)

The storage server power system consists of two power supply CRUs.
Exception: The DS4300 single-controller storage server (Model 6LU/6LX) has only
one power supply CRU. Therefore, you cannot hot swap the power supply.
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).
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IBM TotalStorage DS4300 Fibre Channel Storage Server: Installation and User's Guide
Do not run the storage server without adequate ventilation and cooling,
a. Slide the latch to unlock the fan CRU.
b. Use the handle (black knob) to pull the fan from the storage server. See
Figure 62.
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, see
"Troubleshooting" on page 100.