Working With Hot-Swap Power Supply/Fan Units; Removing A Hot-Swap Power Supply/Fan Unit - IBM TotalStorage 200 Installation And User Manual

Installing an ESM board
There are two hot-swap ESM boards at the back of the unit. You can install the
ESM board and SCSI cable without turning off power to the engine. Complete the
following steps to install a storage unit ESM board:
1. Hold the board so the tray handle 3 is attached to the bottom of the tray and
2. Slide the ESM board 2 into the bay and move the handle 3 to the closed
3. Push in the orange push pin 4 .
4. Connect the SCSI cable 1 to the ESM board.
5. Power on the storage unit.

Working with hot-swap power supply/fan units

Before you begin
v Read the safety and handling guidelines provided in "Appendix D. Safety notices" on page 51.
The power supplies are customer replaceable units (CRUs) and do not require
preventive maintenance.
v The power supplies must always be installed in the proper place to maintain
v Use only the supported power supplies for your specific storage unit.

Removing a hot-swap power supply/fan unit

Complete the following steps to remove a hot-swap power supply:
1. Turn off the power supply.
2. Unplug the power supply cord from the electrical outlet.
3. Disconnect the power cord from the power supply.
4. Loosen the power supply thumbscrews 1 .
5. Grasp the handles 2 on each side of the power supply and pull the unit out of
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5194 Network Attached Storage Model EXU Installation and User's Guide
the tray handle 3 is fully extended.
position (left) until it clicks.
proper storage unit cooling.
the storage unit.