When handling chassis
components, wear an ESD strap and handle modules by the carrier edges only.
Keep the shipping container in case the
chassis requires shipping in the future.
The chassis is thoroughly
inspected before shipment. If any damage occurred during transportation or any
items are missing, contact your customer service representative immediately.
Remove the chassis from its
cardboard container. Save all packaging material.
Compare the shipment to the equipment list provided by your
customer service representative and verify that you have received all items.
Check for damage and report
any discrepancies or damage to your customer service representative. Have the
following information ready:
Invoice number of shipper
(see the packing slip)
Model and serial number of
the damaged unit
Description of damage
Effect of damage on the
This section provides the
requirements for installing the Cisco UCS M4308 Modular Chassis in a standard
open rack, assuming an external ambient air temperature range of 50 to 95°F (10
Do not use racks that have
obstructions. These obstructions could impair access to field-replaceable units
The Cisco R Series Racks are
an ideal choice. If you use other racks, the rack must be of the following
Standard 19-inch (48.3 cm)
four-post EIA rack, a minimum of 39.4 inches (100 cm) deep, with mounting rails
that conform to English universal hole spacing per section 1 of
The mounting holes of the
rails in the rack must be square (unless the optional round hole adapter kit is
The tool-less rack-mount kit
shipped with the chassis is required. The adjustable rack rails shipped with
each enclosure extend from 29 inches (73.66 cm) to 35 inches (88.9 cm).
Front and rear doors—If your
server rack includes closing front and rear doors, the doors must have a 65
percent open perforated area evenly distributed from top to bottom to permit
Always use blanking panels to
fill all remaining empty front panel U-spaces in the rack. This arrangement
ensures proper airflow. Using a rack without blanking panels results in
improper cooling that can lead to thermal damage.
The rack must also meet the
The minimum available
vertical rack space per chassis must be two RU (rack units), equal to 3.5
inches (8.9 cm).
When you are installing the
chassis, follow these guidelines:
Plan your site configuration
and prepare the site before installing the chassis. .
Ensure that there is adequate
space around the chassis to allow for servicing the chassis and for airflow.
Ensure that the site power
meets the power requirements listed in
We recommend that you use a UPS to protect the UCS system. Using an unprotected
supply exposes you to a risk of system failure due to input supply voltage
variations or failures.
Avoid UPS types that use
ferroresonant technology. These UPS types can become unstable with systems such
as the Cisco UCS, which can have substantial current draw fluctuations due to
fluctuating data traffic patterns.
Ensure that circuits are
sized according to local and national codes. For North America, the power
supply requires a 20 A circuit.
To prevent loss of input
power, ensure that the total maximum loads on the circuits supplying power to
the chassis are within the current ratings for the wiring and breakers.
Use the following torque
values when installing the chassis:
Airflow through the chassis
is from front to back. Air enters the chassis through the blade servers and
power supply grills at the front of the chassis and exits through the fan
modules on the back of the chassis. To ensure proper airflow, follow these
Maintain ambient airflow
throughout the data center to ensure normal operation.
Consider the heat dissipation
of all equipment when determining air-conditioning requirements. Do not allow
the exhaust of one system to be the intake for another system.
When evaluating airflow
requirements, take into consideration that the hot air generated by equipment
at the bottom of the rack can be drawn in the intake of the equipment above.
Make sure that the exhaust at
the rear of the chassis is unobstructed for at least 24 in. (61 cm). This
includes obstruction due to messy cabling practices.
If an enclosed rack is used,
the front door must be 65 percent perforated to ensure adequate airflow to the
and Warnings for the Cisco UCS M4308 Modular Chassis
The following notes and
warnings apply to all installation tasks:
symbol means danger. You are in a situation that could cause bodily injury.
Before you work on any equipment, be aware of the hazards involved with
electrical circuitry and be familiar with standard practices for preventing
accidents. Use the statement number provided at the end of each warning to
locate its translation in the translated safety warnings that accompanied this
device. Statement 1071
SAVE THESE INSTRUCTIONS
This unit is intended for
installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means
of security. Statement 1017
Only trained and qualified
personnel must be allowed to install, replace, or service this equipment.
Installing Server in Rack
This section provides
information about how to install the server in a rack.
Attach the inner rails to the
sides of the server (see Figure 1):
inner rail with one side of the server so that the three keyed slots in the
rail align with the three pegs on the side of the server.
keyed slots over the pegs, and then slide the rail toward the front to lock it
in place on the pegs. The front slot has a metal clip that locks over the front
second inner rail to the opposite side of the server.
Figure 1. Attaching Inner Rail to Side of Server
Front of server
Locking clip on inner rail
Open the front securing plate
on both slide-rail assemblies. The front end of the slide-rail assembly has a
spring-loaded securing plate that must be open before you can insert the
mounting pegs into the rack-post holes.
On the outside
of the assembly, push the green arrow button toward the rear to open the
securing plate (see Figure 2).
Figure 2. Front Securing Mechanism,
Inside of Front End
Front mounting pegs
Securing plate shown pulled
back to open position
Install the slide rails into
slide-rail assembly front end with the front rack-post holes that you want to
use. The slide rail front-end wraps around the outside of the rack post and the
mounting pegs enter the rack-post holes from the outside-front.
post must be between the mounting pegs and the open securing plate.
mounting pegs into the rack-post holes from the outside-front.
securing plate release button, marked "PUSH." The spring-loaded securing plate
closes to lock the pegs in place.
slide-rail length, and then push the rear mounting pegs into the corresponding
rear rack-post holes. The slide rail must be level front to rear. The rear
mounting pegs enter the rear rack-post holes from the inside of the rack post.
second slide-rail assembly to the opposite side of the rack. Ensure that the
two slide-rail assemblies are at the same height with each other and are level
front to back.
inner slide rails on each assembly out toward the rack front until they hit the
internal stoops and lock in place.
Insert the server into the
can weigh up to 90 pounds (40.8 kilograms) when fully loaded with components.
We recommend that you use a minimum of two people or a mechanical lift when
lifting the server. Attempting this procedure alone could result in personal
injury or equipment damage.
rear of the inner rails that are attached to the server sides with the front
ends of the empty slide rails on the rack.
inner rails into the slide rails on the rack until they stop at the internal
release clip toward the rear on both inner rails, and then continue pushing the
server into the rack until its front slam latches engage with the rack posts.
Figure 3. Inner
Rail Release Clip
Inner rail release clip
Outer rail attached to rack
Inner rail attached to server
(Optional) Secure the server
in the rack more permanently by using the two screws that are provided with the
slide rails. Perform this step if you plan to move the rack with servers
server fully pushed into the slide rails, open a hinged slam latch lever on the
front of the server and insert the screw through the hole that is under the
lever. The screw threads into the static part of the rail on the rack post and
prevents the server from being pulled out. Repeat for the opposite slam latch.
Installing the Cable Management Arm (Optional)
With the server pushed fully
into the rack, slide the CMA tab of the CMA arm that is farthest from the
server (item 1) onto the end of the stationary slide rail that is attached to
the rack post. Slide the tab over the end of the rail until it clicks and
Slide the CMA tab that is
closest to the server (item 2) over the end of the inner rail that is attached
to the server. Slide the tab over the end of the rail until it clicks and
Pull out the width-adjustment
slider that is at the opposite end of the CMA assembly until it matches the
width of your rack.
Slide the CMA tab that is at
the end of the width-adjustment slider onto the end of the stationary slide
rail that is attached to the rack post. Slide the tab over the end of the rail
until it clicks and locks.
Open the hinged flap at the
top of each plastic cable guide and route your cables through the cable guides
Figure 4. Attaching the Cable
Management Arm to the Rear of the Slide Rails
CMA tab on arm farthest from
server and end of stationary outer slide rail
CMA tab on width-adjustment
slider and end of stationary outer slide rail
tab on arm closest to the server and end of inner slide rail attached to server
Reversing the Cable Management Arm (Optional)
Flip the entire CMA assembly
180 degrees. The plastic cable guides must remain pointing upward.
Flip the tabs at the end of
each CMA arm so that they point toward the rear of the server.
Pivot the tab that is at the
end of the width-adjustment slider. Depress and hold the metal button on the
outside of the tab and pivot the tab 180 degrees so that it points toward the
rear of the server.
Figure 5. Reversing the