Cisco C4200 User manual

Maintaining the Server Chassis
This chapter contains information about system LEDs and supported component installation or replacement.
•Status LEDs and Buttons, on page 1
•Preparing For Component Installation, on page 6
•Opening the Chassis Compartment Covers, on page 9
•Removing and Replacing Components, on page 11
Status LEDs and Buttons
This section contains information for interpreting LED states.
Front-Panel LEDs
Figure 1: Front Panel LEDs
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Table 1: Front Panel LEDs, Definition of States
StatesLED Name
• Off—No node is detected in the node bay.
• Green—The node is operating normally.
•Amber, steady—The node is in a degraded operational
state (minor fault). For example:
• Power supply redundancy is lost.
• CPUs are mismatched.
• At least one CPU is faulty.
• At least one DIMM is faulty.
•At least one drive in a RAID configuration failed.
• Amber, blinking—The node is in a critical fault state.
For example:
• Boot failure
• Fatal processor and/or bus error detected
• Over-temperature condition detected
Node health
The numbers 1 - 4 correspond to the numbered node
bays.
1
• Green—All power supplies are operating normally.
• Amber, steady—One or more power supplies are in
a degraded operational state.
• Amber, blinking—One or more power supplies are
in a critical fault state.
Power supply status2
Activating the locator beacon on any installed compute
node activates this chassis locator beacon.
• Off—The unit identification function is not in use.
• Blue, blinking—The unit identification function is
activated.
Locator beacon3
• Green—The system is operating at normal
temperature.
• Amber, steady—One or more temperature sensors
breached the critical threshold.
• Amber, blinking—One or more temperature sensors
breached the non-recoverable threshold.
Temperature status4
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Front-Panel LEDs

• Green—All fan modules are operating properly.
• Amber, steady—One fan has a fault.
• Amber, blinking—Two or more fan modules have a
fault.
Fan status5
• Off—The hard drive is operating properly.
• Amber—Drive fault detected.
• Amber, blinking—The device is rebuilding.
• Amber, blinking with one-second interval—Drive
locate function activated in the software.
SAS/SATA drive fault
NVMe solid state drive (SSD) drive tray
LEDs have different behavior than
SAS/SATA drive trays.
Note
6
SAS
• Off—There is no hard drive in the hard drive tray (no
access, no fault).
• Green—The hard drive is ready.
•Green, blinking—The hard drive is reading or writing
data.
SAS/SATA drive activity
NVMe solid state drive (SSD) drive tray
LEDs have different behavior than
SAS/SATA drive trays.
Note
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SAS
• Off—The drive is not in use and can be safely
removed.
• Green—The drive is in use and functioning properly.
• Green, blinking—the driver is initializing following
insertion or the driver is unloading following an eject
command.
• Amber—The drive has failed.
• Amber, blinking—A drive Locate command has been
issued in the software.
NVMe drive fault6
NVMe
• Off—No drive activity.
• Green, blinking—There is drive activity.
NVMe drive activity LED7
NVMe
Rear-Panel LEDs
The power supply LEDs are the only rear-panel LEDs native to the chassis. Compute node LEDs that repeat
on each compute node are also described below. The rear ports and LEDs vary, depending on which adapter
card and PCIe cards are installed.
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Maintaining the Server Chassis
Rear-Panel LEDs

Figure 2: Rear Panel LEDs
Table 2: Rear Panel LEDs, Definition of States
StatesLED Name
• Green—The node is operating normally.
•Green, Blinking—The node is in standby power mode.
• Amber—The node is in a degraded condition (for
example, one or more of the following conditions):
• Faulty or mismatched CPUs
• DIMM failure
• Failed drive in a RAID configuration
• Amber, Blinking—The node is in a critical condition
(for example, one or more of the following
conditions):
• Boot failure
• Fatal CPU and/or bus errors detected
• Fatal uncorrectable memory errors
• Excessive thermal conditions
Node Health Status1
• Off—There is no AC power to the node.
• Amber—The node is in standby power mode. Power
is supplied only to the Cisco IMC and some
motherboard functions.
• Green—The node is in main power mode. Power is
supplied to all node components.
Node Power button/Node Power status
(One each node)
2
• Off—Link speed is 10 Mbps.
• Amber—Link speed is 100 Mbps.
• Green—Link speed is 1 Gbps.
Node 1-Gb Ethernet dedicated management link speed
(One each node)
3
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Maintaining the Server Chassis
Rear-Panel LEDs

• Off—No link is present.
• Green—Link is active.
• Green, blinking—Traffic is present on the active link.
Node 1-Gb Ethernet dedicated management link status
(One each node)
4
• Off—The unit identification function is not in use.
• Blue, blinking—The unit identification function is
activated.
Node locator beacon
(One each node)
5
AC power supplies:
•Off—No AC input to any power supplies in the system
(12 V main power off, 12 V standby power off).
• Green, blinking—12 V main power off; 12 V standby
power on.
• Green, solid—12 V main power on; 12 V standby
power on.
• Amber, blinking—Warning threshold detected but 12
V main power on.
• Amber, solid—Critical error detected; 12 V main
power off (for example, over- or under-current,
over-voltage, or over-temperature failure).
• Amber, solid—If no AC input is supplied to one
power supply, the LED lights amber from the shared
system standby bus.
Power supply status
(One bi-color LED each power supply unit)
6
Internal Diagnostic LEDs in the Chassis
The fan tray in the chassis includes a fault LED for each of the fan modules. The four LEDs are numbered to
correspond to the four numbered fan modules.
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Maintaining the Server Chassis
Internal Diagnostic LEDs in the Chassis

Figure 3: Chassis Internal Diagnostic LED Location on Fan Tray
-Fan module fault LEDs on fan tray (one LED for
each fan module)
• Green—Fan is OK.
• Amber—Fan has a fault or is not fully seated.
1
Preparing For Component Installation
This section includes information and tasks that help prepare the chassis for component installation.
Required Equipment For Service Procedures
The replaceable components in the system chassis require the following tools for removal or installation:
• #1 Phillips-head screwdriver (for opening the supercap compartment cover)
• An electrostatic discharge (ESD) strap or other grounding equipment such as a grounded mat is
recommended to protect components.
Shutting Down and Removing Power From the System
Chassis Power
The C4200 system chassis does not include a physical power button. All of the component replacement in
the chassis can be performed without removing chassis power (assuming two power supplies with 1+1
redundancy).
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Maintaining the Server Chassis
Preparing For Component Installation

The chassis top covers are designed to allow access to replaceable components without exposing the user to
high voltages. However, to completely remove power when moving a chassis, you must disconnect all power
cords from the power supplies in the chassis.
Caution
Compute Node Power
Compute nodes include a physical power button so that you can shut down the individual node and any
installed operating system by using the power button on the node or the software interface.
To avoid data loss or damage to your operating system, you should always invoke a graceful shutdown.
Caution
The compute node can run in either of two power modes:
• Main power mode—Power is supplied to all server components and any operating system on your drives
can run.
• Standby power mode—Power is supplied only to the service processor and certain components. It is safe
for the operating system and data to remove the node from the chassis in this mode.
Shutting Down a Node Using the Power Button
Step 1 Check the color of the Power button/LED on the face of the compute node:
• Amber—The node is already in standby mode and you can safely remove it from the chassis.
• Green—The node is in main power mode and must be shut down before you can safely remove it from the chassis.
Step 2 Invoke either a graceful shutdown or a hard shutdown:
To avoid data loss or damage to your operating system, you should always invoke a graceful shutdown of the
operating system. Do not power off a node if any firmware or BIOS updates are in progress.
Caution
• Graceful shutdown—Press and release the Power button. The operating system performs a graceful shutdown and
the node goes to standby mode, which is indicated by an amber Power button/LED.
• Emergency shutdown—Press and hold the Power button for 4 seconds to force the main power off and immediately
enter standby mode.
Shutting Down a Node Using The Cisco IMC GUI
You must log in with user or admin privileges to perform this task.
Step 1 In the Navigation pane, click the Chassis tab.
Step 2 On the Chassis tab, click Summary.
Step 3 In the toolbar above the work pane, click the Host Power link.
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Shutting Down a Node Using the Power Button

The Server Power Management dialog opens. This dialog lists all servers that are present in the system.
Step 4 In the Server Power Management dialog, select one of the following buttons for the server that you want to shut down:
To avoid data loss or damage to your operating system, you should always invoke a graceful shutdown of the
operating system. Do not power off a node if any firmware or BIOS updates are in progress.
Note
• Shut Down—Performs a graceful shutdown of the operating system.
• Power Off—Powers off the chosen node, even if tasks are running on that server.
It is safe to remove the node from the chassis when the Chassis Status pane shows the Power State as Off for the node
that you are removing.
The physical power button on the node also turns amber when it is safe to remove the node from the chassis.
Shutting Down Using The Cisco IMC CLI
You must log in with user or admin privileges to perform this task.
Step 1 At the server prompt, enter:
Example:
server# scope chassis
Step 2 At the chassis prompt, enter: scope server n
Example:
server/chassis# scope server 1
Step 3 At the chassis/server prompt, enter:
Example:
server/chassis/server# power shutdown
The operating system performs a graceful shutdown and the node goes to standby mode, which is indicated by an amber
Power button/LED.
Shutting Down a Node Using The Cisco UCS Manager Equipment Tab
You must log in with user or admin privileges to perform this task.
Step 1 In the Navigation pane, click Equipment.
Step 2 Expand Equipment > Chassis > Chassis Number > Servers.
Step 3 Choose the node that you want to shut down.
Step 4 In the Work pane, click the General tab.
Step 5 In the Actions area, click Shutdown Server.
Step 6 If a confirmation dialog displays, click Yes.
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Maintaining the Server Chassis
Shutting Down Using The Cisco IMC CLI

The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
Shutting Down a Node Using The Cisco UCS Manager Service Profile
You must log in with user or admin privileges to perform this task.
Step 1 In the Navigation pane, click Servers.
Step 2 Expand Servers > Service Profiles.
Step 3 Expand the node for the organization that contains the associated service profile.
Step 4 Choose the service profile of the node that you are shutting down.
Step 5 In the Work pane, click the General tab.
Step 6 In the Actions area, click Shutdown Server.
Step 7 If a confirmation dialog displays, click Yes.
The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
Opening the Chassis Compartment Covers
The server chassis has been designed so that only small compartment covers are opened to allow access to
replaceable components (cooling fans and supercap units for RAID backup).
Never remove the overall chassis cover; open only the compartment covers. The overall cover protects the
user from exposure to hazardous voltages that are present in the chasssis.
Caution
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Maintaining the Server Chassis
Shutting Down a Node Using The Cisco UCS Manager Service Profile

Figure 4: Fan and Supercap Compartment Covers
Supercap compartment cover3Fan compartment cover1
Supercap compartment cover securing screw4Fan compartment cover latch and lock2
Opening the Fan Compartment Cover
Step 1 Open the hinged cover:
a) If the cover latch is locked, use a screwdriver to turn the lock 90-degrees counterclockwise to unlock it.
b) Lift on the end of the latch that has the green finger grip. The cover is pushed back as you lift the latch.
c) Open the hinged cover.
Step 2 Close the hinged cover:
a) With the latch in the fully open position, close the hinged cover.
b) Press the cover latch down to the closed position. The cover is pushed forward.
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Maintaining the Server Chassis
Opening the Fan Compartment Cover