Cisco UCS C-Series Rack Servers

August 1, 2011

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision	Date	Comment
1.0	01-AUG-2011	Initial Public Release

Products Affected

Product	Top Assembly		Comments	HW Rev
Products Affected	Part #	Rev.
MDE-650WPS	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
MDE-650WPS=	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB=	A0
DMS-650WPS-SB	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
DMS-650WPS-SB=	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB=	A0
MXE-3500-K9	74-7541-01	01	Top Assembly Power Supply is subcomponent of Product Affected PID
MXE-3500-K9=	74-7541-01	01	Top Assembly Power Supply is subcomponent of Product Affected PID
MXE-3500-NFR-K9	74-7541-01	01	Top Assembly Power Supply is subcomponent of Product Affected PID
MXE-3500-PROMO-K9	74-7541-01	01	Top Assembly Power Supply is subcomponent of Product Affected PID
MXE-3500-V2-PS	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
MXE-3500-V2-RPS	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
MXE-3500-V2-RPS=	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
R200-1120402W-CH			Affected PID noted is a chassis assembly which includes a bundled power supply. Only the power supply is affected
R200-DISTIPSU-650W	74-7541-01		Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB=	A0
R210-CNFG1-N			Affected PID noted is a chassis assembly which includes a bundled power supply. Only the power supply is affected
R2X0-PSU2-650W-SB	74-7541-01	01		A0
R2X0-PSU2-650W-SB=	74-7541-01	01		A0
UC-R210-2121605			Affected PID noted is a chassis assembly which includes a bundled power supply. Only the power supply is affected
UC2-R2X0-PSU2-650W	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
SV-FRU2-PS-SB	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB	A0
SV-FRU2-PS-SB=	74-7541-01	01	Affected PID noted is for original order only, and is fulfilled with PID R2X0-PSU2-650W-SB=	A0

Problem Description

Power supply overheats under light load conditions.

Background

The firmware-driven power supply fan control algorithm does not run the fan at high enough speed when detecting a very light load. The power supply firmware version with this issue is 00.01.04. In a worst case failure mode, the power supply may shut off due to overheat condition.

Problem Symptoms

One or more of the following symptoms may be exhibited when the power supply is operating under light load:

• Power supply heat alarm is generated.
• Power supply is hot to the touch.
• Power supply shuts down due to excessive heat.

Workaround/Solution

Replace the power supply with new version. Systems with redundant power supplies allow hot swapping of one power supply at a time without shutting down the server.

These variations of Cisco Product ID R2X0-PSU2-650W-SB or R2X0-PSU2-650W-SB= have updated firmware to fix the issue:

• Part number 74-7541-01 labeled with deviation# D119208
• Part number 74-7541-02

A program is in place to provide advance shipment replacement power supplies at no cost. The old affected power supply may be discarded after replacement is complete. Please refer to the Upgrade Program section for details on how to order a replacement power supply.

How To Identify Hardware Levels

Method 1 - Cisco Integrated Management Controller (CIMC) GUI Interface

Select the Power Supplies tab on CIMC and check the Product ID and firmware version. The affected Product ID is R2X0-PSU2-650W-SB, and the affected firmware version is 00.01.04. The updated/fixed firmware version is 00.01.05. This example displays two power supplies with fixed firmware:

This next example shows output when the older power supply Product ID R2X0-PSU2-650W is installed. This power supply is NOT affected by the overheat issue:

Method 2 - Command Line

Issue these CLI commands through the management interface:

server1# scope chassis
server1 /chassis # show psu detail
Name PSU1:
In. Power (Watts): 8
Out. Power (Watts): 650
Firmware : 00.01.04
Status : Present
Product ID : R2X0-PSU2-650W-SB

This example shows affected firmware level 00.01.04. The fixed firmware level is 00.01.05.

Method 3 - External Label Identification

Affected power supplies are externally labeled with part number 74-7541-01 and no additional deviation label.

Power supplies with the firmware fix are labeled with either of the following:

• Part number 74-7541-02
• Part number 74-7541-01 plus a label with deviation# D119208

This example shows a power supply with a deviation label:

Deviation

Power supplies externally labled with Deviation# D119208 have the firmware fix applied.

Upgrade Program

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email
• By telephone

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