Installing An Optional Host Port Adapter Or Replacing A Failed Host Port Adapter - IBM DS3500 Installation, User's, And Maintenance Manual

3. Move the screwdriver as shown in the illustration until the cover is released from the
battery-compartment base.
4. Lift the contact tab; then, slide the battery out of the battery compartment.
5. Repeat Steps 1 on page 5-8 through 4 to locate and remove the lithium battery in Controller B; then,
continue with Step 6.
6. Dispose of the batteries as required by local ordinances or regulations.
The battery must be recycled or disposed of properly. Recycling facilities may not be available in your
area. For information on disposal of batteries outside the United States, see http://www.ibm.com/
ibm/environment/products/batteryrecycle.shtml or contact your local waste disposal facility.
In the United States, IBM has established a return process for reuse, recycling, or proper disposal of
used batteries. For information on proper disposal of these batteries, contact IBM at 1-800-426-4333.
Installing an optional host port adapter or replacing a failed host port
adapter
Attention: If you install a host port adapter in a controller and the storage subsystem contains two
controllers, you must make sure that an identical host port adapter is installed in the other controller.
To install a host port adapter, complete the following steps.
Attention: When you add a host port adapter to an existing configuration the subsystem must be
powered off, and you must schedule maintenance time to perform this task offline. To prevent data loss,
you must shut down the storage subsystem before you remove the controller from the chassis. For the
correct shutdown sequence, see "Turning off the storage subsystem" on page 4-14. However, you do not
have to power off the subsystem when replacing a failed host port adapter in a dual controller
subsystem.
1. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
2. If you are replacing a failed host port adapter, skip to the next step. Otherwise, turn off the storage
subsystem (see "Turning off the storage subsystem" on page 4-14).
3. Label all of the cables that are connected to the controller, then disconnect those cables.
4. Remove the controller from the chassis.
Slot
Battery
Chapter 5. Replacing components
5-9