Cisco MDS 9220i User manual

Installing the Cisco MDS 9220i Switch
This chapter describes how to install the Cisco MDS 9220i switch and its components.
Before you install, operate, or service the system, see the Regulatory Compliance and Safety Information for
the Cisco MDS 9000 Family document for important safety information.
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
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
Each new switch requires a license. See the Cisco MDS 9000 Series Licensing Guide, Release 8.x for
instructions on installing a license.
•Preinstallation, on page 1
•Cisco MDS 9000 Series Telco and EIA Shelf Bracket, on page 2
•Before Installing the Shelf Brackets, on page 2
•Preinstallation Guidelines, on page 5
•Installing the Switch, on page 7
•Grounding the Switch, on page 16
•Installing and Removing Power Supply Units, on page 17
•Installing and Removing Fan Modules, on page 18
Preinstallation
This section includes the following information:
Installation Options
A Cisco MDS 9220i Switch can be installed using the following methods:
• In an open EIA rack
Installing the Cisco MDS 9220i Switch
1

• In a perforated EIA cabinet
The rack-mount kit enables you to install the switch into racks of varying depths. You can use the rack-mount
kit parts to position the switch with easy access to either the port connections end of the chassis or the end of
the chassis with the fan and power supply modules. For instructions on how to install the rack-mount kit, see
the Installing the Switch, on page 7 section.
Cisco MDS 9000 Series Telco and EIA Shelf Bracket
The optional Telco and EIA Shelf Bracket Kit (part number DS-SHELF=) can temporarily or permanently
support the Cisco MDS 9220i switch during installation. After the front rack-mount brackets are securely
attached to the rack-mounting rails, the shelf bracket can be removed.
The Telco and EIA Shelf Bracket kit supports the following configurations:
• A Cisco MDS 9220i Switch in a two-post Telco rack
• A Cisco MDS 9220i Switch in a four-post EIA rack
Telco and EIA Shelf Bracket optional kit is not provided with the switch; to order the kit, contact your switch
supplier.
Note
This section describes the procedure for installing a Cisco MDS 9220i switch in a rack or cabinet using the
optional Telco and EIA Shelf Bracket Kit.
Rack-Mounting Guidelines
• If the rack is on wheels, ensure that the brakes are engaged or the rack is otherwise stabilized.
• If you are installing this kit in an EIA rack, attach the shelf to all four rack-mounting posts; the EIA posts
may not be thick enough to prevent flexing of shelf brackets if only two posts are used.
Caution
Before Installing the Shelf Brackets
Before installing the shelf brackets, inspect the contents of your kit. The following table lists the contents of
the shelf bracket kit:
Part DescriptionQuantity
Slider brackets2
Shelf brackets2
Crossbar1
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Cisco MDS 9000 Series Telco and EIA Shelf Bracket

Part DescriptionQuantity
10-32 x 3/8-in. Phillips pan-head screws2
12-24 x 3/4-in. Phillips screws16
10-24 x 3/4-in. Phillips screws16
Required Equipment
You need the following equipment for this installation:
• Number 2 Phillips screwdriver
• Tape measure and level (to ensure that shelf brackets are at level with each other)
• NEBS plate - If the airflow is port-side intake
Installing the Shelf Bracket Kit into a Two-Post Telco Rack
The following figure shows the installation of the shelf bracket kit into a two-post Telco rack:
Figure 1: Installing the Shelf Bracket Kit into a Telco Rack
10-32 screws3Rack-mounting post1
Crossbar4Shelf bracket2
To install the shelf brackets in a Telco rack, follow these steps:
Step 1 Position a shelf bracket inside a rack-mounting post as shown in and align the screw holes at the front of the shelf bracket
with the holes in the rack-mounting post. Then, attach the shelf bracket to the rack-mounting post using a minimum of
four 12-24 or 10-24 screws.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Required Equipment

The bottom hole of the shelf bracket should align with the bottom hole (the hole immediately above the 1/2 in.
spacing) of a rack unit on the rack-mounting post.
Note
Step 2 Repeat Step 1 with the other shelf brackets.
Step 3 Verify that the shelf brackets are at the same height (using the level or tape measure, as desired).
Step 4 Attach the crossbar to the rear of the shelf brackets, as shown in , using the 10-32 screws.
Installing the Shelf Bracket Kit into a Four-Post EIA Rack
The following figure shows the installation of the shelf bracket kit into a four-post EIA rack:
Figure 2: Installing the Shelf Bracket Kit into an EIA Rack
Crossbar4Rack-mounting post1
10-32 screws5Shelf bracket2
Slider post3
To install the shelf brackets in an EIA rack, follow these steps:
Step 1 Position a shelf bracket inside the rack-mounting posts, as shown in Figure 2: Installing the Shelf Bracket Kit into an
EIA Rack, on page 4. Align the screw holes at the front of the shelf bracket with the holes in the front rack-mounting
post. Then, attach the shelf bracket to the front rack-mounting post using a minimum of four 12-24 or 10-24 screws.
The bottom hole of the shelf bracket should align with the bottom hole (the hole immediately above the 1/2 in.
spacing) of a rack unit on the rack-mounting post.
Note
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing the Shelf Bracket Kit into a Four-Post EIA Rack

Step 2 Repeat Step 1 with the other shelf brackets.
Step 3 Verify that the shelf brackets are at the same height (using the level or tape measure, as desired).
Step 4 Attach the crossbar to the shelf brackets, as shown in Figure 2: Installing the Shelf Bracket Kit into an EIA Rack, on page
4, using the 10-32 screws.
Step 5 Insert the slider posts into the shelf brackets, as shown in Figure 2: Installing the Shelf Bracket Kit into an EIA Rack, on
page 4. Attach them to the rear rack-mounting posts, using a minimum of four 12-24 or 10-24 screws.
Preinstallation Guidelines
Airflow Considerations
The switch comes with fan modules that have port-side intake or port-side exhaust and power supply units
that have port-side intake, port-side exhaust, or bidirectional airflow for cooling the switch. If you are
positioning the port-end of the switch in a cold aisle, make sure that the switch has a port-side intake fan and
power supply units with red colorings. If you are positioning the fan and power supply units in a cold aisle,
make sure that the switch has port-side exhaust fan and power supply units with blue colorings. Bidirectional
power supply modules with white coloring can be used with either of these options. All fan modules and
power supply units must have the same direction of airflow.
Connection Guidelines for AC Powered Systems
To connect to the Cisco MDS 9220i switch AC power supply units to the site power source, follow these
guidelines:
• Each power supply should have its own dedicated branch circuit.
• The AC power receptacles that are used to plug in the chassis must be the grounding type. The grounding
conductors that connect to the receptacles should connect to protective earth ground in the service
equipment.
Installation Guidelines
Follow these guidelines when installing the Cisco MDS 9220i switch:
• Plan your site configuration and prepare the site before installing the switch.
• Ensure that there is adequate space around the switch to allow for servicing the switch and for adequate
airflow.
• Ensure that you are positioning the switch in a rack so that it intakes cold air from the cold aisle and
exhausts hot air to the hot aisle.
• Ensure that the chassis is adequately grounded. If the switch is not mounted in a grounded rack, we
recommend that you connect both the system ground on the chassis and the site power ground to an earth
ground.
• Ensure that circuits are sized according to local and national codes.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Preinstallation Guidelines

To prevent loss of input power, ensure that the total maximum loads on the circuits
supplying power to the switch are within current ratings for wiring and breakers.
Caution
Unpacking and Inspecting the Switch
When handling switch components, wear an ESD strap and handle modules using only the carrier edges. An
ESD socket is provided on the chassis. For an ESD socket to be effective, the chassis must be grounded
through the power cable, the chassis ground, or the metal-to-metal connection with a grounded rack.
Caution
Retain the shipping container in case the chassis has to be shipped in the future.
Tip
The switch is thoroughly inspected before shipment. If any damage occurs during transportation, or if any
item is missing, contact your customer representative immediately. If you purchased Cisco support through
a Cisco reseller, contact the reseller directly. If you purchased support directly from Cisco, contact Cisco
Technical Support.
Note
To inspect the shipment, follow these steps:
1. Compare the shipment to the equipment list provided by your customer service representative and verify
that you have received all items, including the following:
• Grounding lug kit
• Rack-mount kit
• ESD wrist strap
• Cables and connectors
• Optional items, if any, ordered
2. Check for damage and report any discrepancies or damage, to your customer service representative. Have
the following information ready:
• Invoice number of shipper (see packing slip)
• Model and serial number of the damaged unit
• Description of damage
• Effect of damage on the installation
3. Check to be sure that all the power supplies and the fan trays have the expected direction of airflow.
Port-side intake airflow modules have a red coloring, port-side exhaust airflow modules have a blue
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Unpacking and Inspecting the Switch

coloring, and bidirectional airflow modules have white coloring. For more information, see thePower
Supplies and Fan Modules sections.
Installing the Switch
This section describes how to use the rack-mount kit to install the Cisco MDS 9220i switch into a cabinet or
rack that meets the requirements that are described in the Cabinet and Rack Requirements section.
Installing the Switch on Shelf Brackets
This section provides general instructions for installing the switch on top of the shelf brackets. Note that this
is an optional task.
Before you install, operate, or service the system, refer to Regulatory Compliance and Safety Information for
the Cisco MDS 9000 Family for important safety information.
Note
To install the switch on top of the shelf brackets, follow these steps:
Step 1 Verify that the shelf brackets are level and securely attached to the rack-mounting posts, the crossbar is securely attached
to the shelf brackets, and the rack is stabilized.
Step 2 Slide the switch onto the shelf brackets, ensuring that it is squarely positioned.
Step 3 Attach the switch to the rack-mounting posts.
We recommend that you ground the chassis even if the rack is already grounded. A grounding pad with two
threaded M4 holes is provided on the chassis for attaching a grounding lug.
Caution
For switches installing in the USA, the grounding lug must be NRTL listed and compatible with copper
conductors. Only copper conductors (wires) must be used and these conductors must comply with National
Electrical Code (NEC) for ampacity.
Note
NEBS Compliance
Network Equipment Building System (NEBS) is a USA standard for telecommunications equipment safety
and reliability. In the case of port-side intake airflow the system must be NEBS compliant. To be NEBS
compliant, install the NEBS kit by following these steps:
1. Install two front rack–mount brackets onto the switch.
a. Determine which end of the chassis is to be located in the cold aisle as follows:
• If the switch has port-side intake modules (fan modules with red coloring), position the switch
so that its ports are in the cold aisle.
• If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch
so that its fan and power-supply modules are in the cold aisle.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing the Switch

b. Position a front-mount bracket so that four of its screw holes are aligned to the screw holes on the
side of the chassis.
You can align any four of the holes in the front rack-mount bracket to four of the six screw holes on the side
of the chassis. The holes that you use depend on the requirements of your rack and the amount of clearance
required for interface cables (3 in. [76 mm] minimum) and module handles (1 in. [25 mm] minimum).
Note
c. Secure the front-mount bracket to the chassis using the four M4 screws and tighten each screw to 12
in-lb (1.36 N·m) of torque.
d. Repeat Step 1 for the other front rack-mount bracket on the other side of the switch, and be sure to
position that bracket the same distance from the front of the switch.
2. Align the tabs on the NEBS air baffle on the slots on the front rack-mount bracket and snap the NEBS air
baffle into place as shown in Figure 3: NEBS Kit for 2-Post installation, on page 8 or Figure 4: NEBS
Kit for 4-Post installation, on page 9.
Figure 3: NEBS Kit for 2-Post installation
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
NEBS Compliance

Figure 4: NEBS Kit for 4-Post installation
Front rack-mount bracket2.NEBS air baffle1.
For more information on how to install the switch, see the Installing the Switch in a 4-Post Rack, on page 9
and Installing the Switch into a 2-Post Rack, on page 13.
Installing the Switch in a 4-Post Rack
To install the switch, you must attach the front and rear mounting brackets to the switch, install the slider rails
on the rear of the rack, slide the switch into the slider rails, and secure the switch to the front of the rack.
Typically, the front of the rack is the side that is easiest to access for maintenance.
Before you begin
• Inspect the switch shipment to ensure that you have everything you ordered.
• Make sure that the switch rack-mount kit includes the following parts:
• Front rack-mount brackets (2)
• Rear rack-mount brackets (2)
• Slider rails (2)
• M4 x 0.7 x 8-mm Phillips countersink screws (12)
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing the Switch in a 4-Post Rack

• The rack is installed and secured to its location.
Step 1 Install two front-mount brackets to the switch as follows:
a. Determine which end of the chassis is to be located in the cold aisle as follows:
• If the switch has port-side intake modules (fan modules with red coloring), position the switch so that its ports
are in the cold aisle.
• If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch so that its fan
and power-supply modules are in the cold aisle.
b. Position a front-mount bracket so that four of its screw holes are aligned to the screw holes on the side of the chassis.
You can align any four of the holes in the front rack-mount bracket to four of the six screw holes on the
side of the chassis. The holes that you use depend on the requirements of your rack and the amount of
clearance required for interface cables (3 in. [76 mm] minimum) and module handles (1 in. [25 mm]
minimum).
Note
Figure 5: Installing the Switch in a 4-Post Rack
Rack-mount guide3Four M4 screws1
Two M4 screws4Rack-mount bracket2
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing the Switch in a 4-Post Rack

c. Secure the front-mount bracket to the chassis using the four M4 screws and tighten each screw to 12 in-lb (1.36 N·m)
of torque.
d. Repeat Step 1 for the other front rack-mount bracket on the other side of the switch, and be sure to position that
bracket the same distance from the front of the switch.
Install the NEBS air-baffle onto the switch in case of port-side intake. For more information, see NEBS
Compliance, on page 7.
Note
Step 2 Install the two rear rack-mount brackets on the chassis, as follows:
a. Align the two screw holes on a rear rack-mount bracket to the middle two screw holes in the remaining six screw
holes on a side of the chassis if you are aligning the guide to holes that are near the port connections end of the chassis.
b. Attach the guide to the chassis using two M4 screws. Tighten the screws to 12 in-lb (1.36 N·m) of torque.
c. Repeat Step 2 for the other rear rack-mount bracket on the other side of the switch.
Step 3 If you are not installing the chassis into a grounded rack, you must attach a customer-supplied grounding wire to the
chassis, as explained in cGrounding the Switch, on page 16. However, if you are installing the chassis into a grounded
rack, you can skip this step.
Step 4 Install the slider rails into the rack or cabinet, as follows:
a. Determine which two posts of the rack or cabinet you should use for the slider rails. Of the four vertical posts in the
rack or cabinet, two will be used for the front-mount brackets attached to the easiest-accessed end of the chassis, and
the other two posts will have the slider rails.
b. Position a slider rail at the desired level on the back side of the rack and use two 12-24 screws or two 10-32 screws,
depending on the rack thread type, to attach the posts to the rack. Tighten the 12-24 screws to 30 in-lb (3.39 N·m)
of torque, and tighten the 10-32 screws to 20 in-lb (2.26 N·m) of torque.
c. Repeat Step 3 to attach the other slider rail to the other side of the rack.
To make sure that the slider rails are at the same level, you should use a level tool or tape measure, or carefully count
the screw holes in the vertical mounting posts.
Step 5 Insert the switch into the rack and attach it as follows:
Installing the Cisco MDS 9220i Switch
11
Installing the Cisco MDS 9220i Switch
Installing the Switch in a 4-Post Rack

Customer-supplied rack-mount screw2Fan-tray end of the chassis1
a. Holding the switch with both hands, position the two rear rack-mount brackets on the switch between the rack or
cabinet posts that do not have slider rails attached to them.
b. Align the two rear rack-mount guides on either side of the switch with the slider rails installed in the rack. Slide the
rack-mount guides onto the slider rails, and then gently slide the switch all the way into the rack until the front
rack-mount brackets come in contact with two rack or cabinet posts.
If you attached a grounding cable to the chassis, you will need to bend one of the rack-mount posts slightly
to allow the grounding lug to go behind the post.
Note
c. Holding the chassis level, insert two screws (12-24 or 10-32, depending on the rack type) into each of the two front
rack-mount brackets (using a total of four screws), and into the cage nuts or threaded holes in the vertical rack-mounting
posts.
d. Tighten the 10-32 screws to 20 in-lb (2.26 N·m), or tighten the 12-24 screws to 30 in-lb (3.39 N·m).
Step 6 If you have attached a grounding wire to the chassis grounding pad, connect the other end of the wire to the facility
ground.
Installing the Cisco MDS 9220i Switch
12
Installing the Cisco MDS 9220i Switch
Installing the Switch in a 4-Post Rack

Installing the Switch into a 2-Post Rack
Step 1 Install two rack–mount brackets onto the switch as follows:
a) Determine which end of the chassis is to be located in the cold aisle as follows:
• If the switch has port-side intake modules (fan modules with red coloring), position the switch so that its ports
is in the cold aisle.
• If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch so that its fan
and power supply modules is in the cold aisle.
b) Position a rack–mount bracket so that four of its screw holes are aligned to the screw holes on the side of the chassis.
Then, secure the front-mount bracket to the chassis using four M4 screws.
You can align four of the holes in the front rack-mount bracket to four of the screw holes on the front side
of chassis or four of the screw holes on the rear side of the chassis. The holes that you use depend on which
side of your chassis needs to be put in the cold aisle.
Note
Figure 6: Installing Rack-mount Brackets on the Front Side of the Chassis
Installing the Cisco MDS 9220i Switch
13
Installing the Cisco MDS 9220i Switch
Installing the Switch into a 2-Post Rack

Figure 7: Installing Rack-mount Brackets on the Rear Side of the Chassis
c) Repeat Step 1b, for the other front rack-mount bracket on the other side of the switch and be sure to position that
bracket the same distance from the front of the switch.
Install the NEBS air-baffle onto the switch in case of port-side intake. For more information, see NEBS
Compliance, on page 7.
Note
Step 2 Install the switch onto the 2-post rack:
a) Holding the switch with both hands, position the back of the switch between the two posts of the rack. Then gently
move the switch until the front rack-mount brackets come in contact with two rack posts.
b) Holding the chassis level, insert two screws (12-24 or 10-32, depending on the rack type) into each of the two front
rack-mount brackets (using a total of four screws) and into the cage nuts or threaded holes in the vertical rack-mounting
posts.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing the Switch into a 2-Post Rack

Figure 8: Installing the Switch onto the 2-post Rack
c) Tighten the 10-32 screws to 20 in-lb (2.26 N.m) or tighten the 12-24 screws to 30 in-lb (3.39 N.m).
Removing the Shelf Bracket Kit (Optional)
If it was previously installed, the shelf bracket kit can be removed after the Cisco MDS 9220i switch has been
installed in a four-post EIA rack, and the front rack-mount brackets and the rack-mount guide are securely
attached to the rack-mounting posts.
To remove the shelf bracket kit, follow these steps:
Step 1 Remove the screws fastening the slider brackets to the rear rack-mounting posts, and then slide the slider brackets out of
the shelf brackets.
Step 2 Remove the screws fastening the crossbar to the shelf brackets, and then remove the crossbar.
Step 3 Remove the screws fastening the shelf brackets to the front rack-mounting posts and remove the shelf brackets from the
rack.
Installing the Cisco MDS 9220i Switch
15
Installing the Cisco MDS 9220i Switch
Removing the Shelf Bracket Kit (Optional)

Grounding the Switch
The switch chassis is automatically grounded when you install the switch properly in a grounded rack with
metal-to-metal connections between the switch and rack.
Alternatively, you can ground the chassis (this is required if the rack is not grounded) by attaching a
customer-supplied grounding cable to the chassis grounding pad and the facility ground.
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence
of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician
if you are uncertain that suitable grounding is available. Statement 1024
Warning
When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Warning
To connect the switch chassis to the facility ground, you need the following tools and materials:
• Grounding lug—A two-holed standard barrel lug that supports up to 6 AWG wire. This lug is supplied
with the accessory kit.
• Grounding screws—Two M4 x 8 mm (metric) pan-head screws. These screws are shipped with the
accessory kit.
•Grounding wire—Not supplied with the accessory kit. This wire should be sized to meet local and national
installation requirements. Depending on the power supply and system, a 12 AWG to 6 AWG copper
conductor is required for the USA installations. We recommend that you use commercially available 6
AWG wire. The length of the grounding wire depends on the proximity of the switch to proper grounding
facilities.
• Number 1 manual Phillips-head torque screwdriver.
• Crimping tool to crimp the grounding wire to the grounding lug.
• Wire stripping tool to remove the insulation from the grounding wire.
Step 1 Use a wire stripping tool to remove approximately 0.75 in. (19 mm) of the covering from the end of the grounding wire.
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug, and use a crimping tool to crimp
the lug to the wire. Verify that the ground wire is securely attached to the grounding lug by attempting to pull the wire
out of the crimped lug.
Step 3 Secure the grounding lug to the chassis grounding pad with two M4 screws, and tighten each screw to 11.5 to 15 in-lb
(1.3 to 1.7 N·m) of torque.
Step 4 Prepare the other end of the grounding wire and connect it to an appropriate grounding point in your site to ensure an
adequate earth ground for the switch. If the rack is fully bonded and grounded, connect the grounding wire, as explained
in the documentation provided by the vendor from whom you bought the rack.
Installing the Cisco MDS 9220i Switch
16
Installing the Cisco MDS 9220i Switch
Grounding the Switch

Installing and Removing Power Supply Units
This section provides instructions for installing and removing the power supply units in the Cisco MDS 9220i
switch.
Installing Power Supply Units
You can replace one power supply unit while the other one provides power to the switch.
Before you begin
If the PSU blank module is inserted, remove it as follows:
1. Grasp both the power supply unit handle and release latch with one hand and squeeze the release latch
towards the handle.
2. Gently pull the power supply unit blank module out of the bay.
Step 1 Holding the power supply unit with one hand underneath it and the other hand holding the handle, turn the power supply
unit so that its release latch is on the right side, and align the back end of the power supply unit (the end with the electrical
connections) to the open power supply unit slot. Carefully slide the power supply unit all the way into the slot until it
clicks into place.
If the power supply unit does not fit into the slot opening, turn the unit over and try again.
Note
Step 2 Test the installation by trying to pull the power supply unit out of the slot by the handle, without using the release latch.
If the power supply unit does not move out of place, it is secured in the slot. If the power supply unit moves, carefully
press it all the way into the slot until it clicks in place.
Removing Power Supply Units
You can remove one faulty power supply unit, while the other one provides enough power to the switch.
Install a new power supply unit or a power supply unit blank module in the open slot.
Step 1 Disconnect the power cable. For more information, see Connecting Power Supply Units.
Step 2 Grasp the power supply unit handle and release latch with one hand and squeeze the release latch towards the handle.
Step 3 Place your other hand under the power supply unit to support it while you slide it out of the chassis.
Do not touch the electrical connectors on the back side of the unit and prevent anything else from coming into
contact with and damaging the connectors.
Caution
Step 4 Insert a power supply unit blank module:
a) Grasp the power supply unit blank module handle and release latch with one hand and squeeze the release latch
towards the handle.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing and Removing Power Supply Units

b) Carefully slide the power supply unit all the way into the slot until it clicks into place.
c) Test the installation by trying to pull the power supply blank module out of the slot by the handle, without using the
release latch.
If the power supply blank module does not move out of place, it is secured in the slot. If the power supply blank
module moves, carefully press it all the way into the slot until it clicks in place.
Installing and Removing Fan Modules
This section provides instructions for installing and removing the fan modules for the Cisco MDS 9220i
switch.
If you are changing the airflow direction of all the modules in the chassis, you must shut down the switch
before replacing all the fan and power supply modules with modules using the other airflow direction. During
operations, all the modules must have the same direction of airflow.
Caution
Installing a Fan Module
To install a new fan module, follow these steps:
Before you begin
If a fan blank module is installed, remove it as follows:
• Grasp the fan module release latches with one hand and squeeze the release latch towards the each other.
• Holding the release latches, pull the module out of the chassis.
• A fan slot must be open and ready for the new fan module to be installed.
• You must have a new fan module on hand and ready to install within one minute of removing the original
fan module if the switch is operating.
• The new fan module must have the same airflow direction as the other fan and power supply modules
installed in the switch. All of these modules must have red coloring (port-side intake airflow) or blue
coloring (port-side exhaust airflow).
Step 1 Holding the fan module by its handle, align the back of the fan module (the side with the electrical connectors) to the
open fan slot in the chassis.
Step 2 Slide the fan module into the fan module slot until it clicks into place.
Step 3 Test the installation by trying to pull the fan module out of the slot without using the release latch.
If the fan module does not move out of place, it is secured in the slot. If the fan module moves, carefully press it all the
way into the slot until it clicks in place.
Installing the Cisco MDS 9220i Switch
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Installing the Cisco MDS 9220i Switch
Installing and Removing Fan Modules

Step 4 If the switch is running, verify that the Status LED turns on and becomes green.
Removing a Fan Module
The fan module is designed to be removed and replaced while the system is operating without presenting an
electrical hazard or damaging the system.
Cisco MDS 9000 Series Switches have internal temperature sensors that can shut down the system if the
temperature within the chassis exceed certain safety thresholds. To accurately monitor the system temperature,
the temperature sensors require sufficient airflow through the chassis. In the event that a fan module is removed
from the chassis and the airflow is reduced, the system will bypass the temperature sensor information and
shut down after five minutes to prevent undetected overheating. However, the switches will shut down sooner
if the major temperature threshold is exceeded.
Caution
While removing the fan module, keep your hands and fingers away from the spinning fan blades. Let
the fan blades completely stop before you remove the fan module. Statement 258
Warning
To remove an existing fan module, follow these steps:
Step 1 On the fan module that you are removing, press the two sides of the fan module handle next to where it connects to the
fan module and pull on the handles enough to unseat it from its connectors.
Step 2 Holding the handle, pull the module out of the chassis.
Do not touch the electrical connectors on the back side of the module and prevent anything else from coming
into contact with and damaging the connectors.
Caution
Step 3 Insert a fan blank module:
a) Grasp the fan blank module release latches with one hand and squeeze the release latch towards the each other.
b) Holding the release latches, pull the module out of the chassis.
c) Test the installation by trying to pull the fan blank module out of the slot, without using the release latch.
If the fan blank module does not move out of place, it is secured in the slot. If the fan blank module moves, carefully
press it all the way into the slot until it clicks in place.
Installing the Cisco MDS 9220i Switch
19
Installing the Cisco MDS 9220i Switch
Removing a Fan Module

Installing the Cisco MDS 9220i Switch
20
Installing the Cisco MDS 9220i Switch
Removing a Fan Module