Installing An Additional Esm; Replacing An Esm - IBM DS3500 Installation, User's, And Maintenance Manual

v Receive the replacement part and are ready to install it in the enclosure.

Installing an additional ESM

The storage enclosure comes with one environmental services module (ESM). If your controller supports
redundant drive paths (see the documentation that comes with the controller or the device that contains
the controller), you can install a second ESM.
To install a second ESM, complete the following steps:
1. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
2. Remove the ESM filler panel from the rightmost ESM bay:
a. Open the two release levers. The ESM filler panel moves out of the bay approximately 0.6 cm (0.25
inch).
b. Slide the ESM filler panel out of the bay and set it aside.
DANGER
Electrical voltage and current from power cables are hazardous. To avoid a shock hazard, always
place electrical equipment on dry, static-free level surfaces. Never turn on any electrical equipment
when there is evidence of fire, water, or structural damage.
3. Place the ESM on a dry, static-free level surface.
4. Make sure that the release levers on the ESM are in the open position.
5. Slide the ESM into the bay until it stops.
6. Push the release levers to the closed position.
7. Connect the SAS cable or cables to the ESM. See Chapter 3, "Cabling the storage subsystem and
storage enclosure," on page 3-1 for more information.

Replacing an ESM

If you are replacing the only ESM in the EXP3500 storage enclosure, you must turn off power to the
storage enclosure before you replace the ESM. See "Turning off the storage subsystem" on page 4-14 or
see the documentation that comes with your controller for additional information and instructions.
To replace an ESM, complete the following steps:
1. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
2. If the EXP3500 storage enclosure contains only one ESM, turn off the power to the storage enclosure.
See "Turning off the storage subsystem" on page 4-14 or see the documentation that comes with
your controller for additional information and instructions.
3. Disconnect the cable from the ESM.
4. Open the two release levers. The ESM moves out of the bay approximately 0.6 cm (0.25 inch).
Chapter 5. Replacing components
5-37