About this task
Attention: This procedure causes a loss of
access to data.
CAUTION:
The weight of this part or unit is between 33.6 and
42.6 kg (74 and 94 lb). It takes three people or a lifting machine to safely lift this part or unit.
Ensure that a suitably rated mechanical lift is available to support the weight of the enclosure
when it is inserted into the rack for installation. If you do not have mechanical lifting equipment,
then dis-assemble the removable components from the enclosure so that it becomes safe for 2 persons
to lift the empty chassis from the pallet and into the rack.
To enable two people to lift the enclosure to and from the rack, you can remove the components
from the control enclosure before you remove it from the rack. Record the serial number of the
component in each location so that the components can be returned to the same location at the end of
the procedure. Then, remove the components and place them in a safe location. Also, all cables need
to be labeled.
Refer to the Environmental requirements before you install the enclosure.
DANGER
When
working on or around the system, observe the following precautions:
Electrical voltage
and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard:
If IBM® supplied the power cord(s), connect power to this unit
only with the IBM provided power cord. Do not use the IBM provided power cord for any other product. Do not open or
service any power supply assembly. Do not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical storm.
-
DANGER
Multiple power cords. The product might be equipped
with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages,
disconnect all power cords and power cables. (L003)
- When connecting power to the product ensure all power cables are properly connected.
For racks with AC power, connect all power cords to a properly wired and grounded electrical outlet.
Ensure that the outlet supplies proper voltage and phase rotation according to the system rating
plate. For racks with a DC power distribution panel (PDP), connect the customer’s DC power source to
the PDP. Ensure that the proper polarity is used when attaching the DC power and DC power return
wiring.
- Connect all power cords to a properly wired and grounded electrical outlet. Ensure that the
outlet supplies proper voltage and phase rotation according to the system rating plate.
- Connect any equipment that will be attached to this product to properly wired outlets.
- When possible, use one hand only to connect or disconnect signal cables.
- Never turn on any equipment when there is evidence of fire, water, or structural damage.
- Do not attempt to switch on power to the machine until all possible unsafe conditions
are corrected.
- When performing a machine inspection: Assume that an electrical safety hazard is
present. Perform all ontinuity, grounding, and power checks specified during the subsystem
installation procedures to ensure that the machine meets safety requirements. Do not attempt to
switch power to the machine until all possible unsafe conditions are corrected. Before you open the
device covers, unless instructed otherwise in the installation and configuration procedures:
Disconnect the attached AC power cords, turn off the applicable circuit breakers located in the rack
power distribution panel (PDP), and disconnect any telecommunications systems, networks, and
modems.
- Disconnect the attached power cords, telecommunications systems, networks, and modems before you
open the device covers, unless instructed otherwise in the installation and configuration
procedures.
- Connect and disconnect cables as described in the following procedures when installing, moving,
or opening covers on this product or attached devices.
To disconnect:
- Turn off everything (unless instructed otherwise).
- Remove the power cords from the outlets.
- Remove the signal cables from the connectors.
- Remove all cables from the devices.
To connect:
- Turn off everything (unless instructed otherwise).
- Attach all cables to the devices.
- Attach the signal cables to the connectors.
- Attach the power cords to the outlets.
- Turn on the devices.
Sharp edges, corners and joints might be present in and around the
system. Use care when handling equipment to avoid cuts, scrapes and pinching. (D005)
Attention:
- The control enclosure must be replaced only by a
trained service provider. Complete this procedure only if instructed to do so by a service action or
the IBM Support center.
- If you have a single control enclosure, this procedure requires that you shut down your system
to replace the control enclosure midplane assembly. If you have more than one control enclosure,
part of the system can continue to run. However, you lose access to the volumes that are on the
affected I/O group. You also lose access to any volumes that are in other I/O groups that depend on
the drives that are in the affected I/O group. If the system is still doing I/O requests in all the
I/O groups, schedule the replacement during a maintenance period or other time when the I/O can be
stopped.
- When you replace hardware components in the back of the enclosure, ensure that you do not
inadvertently disturb or remove cables that you are not instructed to remove.
- Ensure that you are aware of procedures for handling static-sensitive devices before you remove
the enclosure.
