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 | Publish Date | Comments |
---|---|---|
1.0 |
21-Jun-13 |
Initial Release |
10.0 |
13-Nov-17 |
Migration to new field notice system |
10.2 |
22-May-18 |
Fixed Broken Image Links |
Affected Product ID | Comments |
---|---|
UCSB-B200-M3 |
|
UCSB-B200-M3= |
Part Alternate |
UCSB-B22-M3 |
|
UCSB-B420-M3 |
|
UCSB-B420-M3= |
Part Alternate |
UCSB-B22-M3= |
Part Alternate |
UCSB-B200-M3-D |
|
UCSB-B200-M3-U |
|
UCSB-B420-M3-CH |
|
UCSB-B420-M3-D |
|
UCSB-B420-M3-U |
|
UCSB-B200-M3-CH |
|
UCSB-B22-M3-D |
|
UCSB-B22-M3-CH |
|
UCSB-B22-M3-U |
|
UCSB-DBUN-B200-301 |
|
UCSB-DBUN-B200-302 |
|
UCSB-DBUN-B200-303 |
|
UCSB-DBUN-B200-304 |
|
UCSB-DBUN-B200-305 |
|
UCS-SP4-PERF-B2M3 |
|
UCS-SP4-ENTV-B2M3 |
|
UCS-SP4-ENTS-B2M3 |
|
UCS-EZ-ENTV-B2M3 |
|
UCS-EZ-ENTS-B2M3 |
|
UCS-EZ-B200M3-384 |
|
UCS-EZ-B200M3-256 |
|
UCS-EZ-PERF-B2M3 |
|
UCSB-DBUN-B420-342 |
|
UCSB-DBUN-B420-341 |
|
UCSB-DBUN-B22-364 |
|
UCSB-DBUN-B420-343 |
|
UCSB-DBUN-B22-363 |
|
UCSB-DBUN-B22-362 |
|
UCSB-DBUN-B22-361 |
|
UCSB-DBUN-B420-344 |
|
CBI-B200-M3-D |
|
UCS-SP-ENTS-B22 |
|
UCS-SP5-ENTV-B200 |
|
UCS-EZ-PERF-B200 |
|
UCS-EZ-ENTV-B200 |
|
UCS-EZ-ENTS-B22 |
|
UCS-SP-PERF-B200 |
|
UCS-EZ-ENSC-B200 |
|
UCS-SP5-ENSC-B200 |
|
UCUCS-EZ-B200M3 |
|
UCS-EZ-PR-FIO-B200 |
|
UCS-SP-PERF-B200M3 |
|
UCS-EZ-PERF-B200M3 |
|
UCS-SP-ENTV-B200M3 |
|
UCS-SP-ENTS-B200M3 |
|
UCS-EZ-ENTV-B200M3 |
|
UCS-SP-ENTS-B22M3 |
|
UCS-EZ-ENTS-B200M3 |
|
UCS-EZ-ENTS-B22M3 |
|
UCS-EZ-ENVP-B200M3 |
|
UCS-EZ-ENSP-B200M3 |
|
UCS-SP-ENVP-B200M3 |
|
UCS-SP-ENSP-B200M3 |
|
UCS-EZ-VDI-B200PK |
|
UCS-EZ-ENTV-B420M3 |
Defect ID | Headline |
---|---|
CSCug93076 | B200M3-DDR voltage regulator may have excessive noise under light load |
CSCug93221 | B420M3-DDR voltage regulator may have excessive noise under light load |
CSCug98662 | B22M3-DDR voltage regulator may have excessive noise under light load |
A voltage regulator on affected UCS B-Series Blade Servers can cause excessive loss in drive voltage on the DDR3 power rails when under light loading conditions. This can cause correctable or uncorrectable memory errors. A firmware update is recommended to improve the performance of the voltage regulator.
A firmware setting for a voltage regulator on affected UCS B-Series Blade Servers can cause signal corruption which can lead to memory errors and failure to boot in some cases. This issue has been observed in the Cisco manufacturing facility as a failure to boot Linux OS. The problem is fixed in an updated firmware image for affected UCS Blade Servers. These Cisco bug IDs are related to this issue:
Memory errors caused by the excessive voltage drop could show up in these ways:
Example:
Key word to search for: "Predictive Failure asserted | Asserted" often followed immediately by "Predictive Failure deasserted | Asserted"
91 | 05/31/2013 10:39:36 | CIMC | Processor CATERR_N #0x74 | Predictive Failure asserted | Asserted 92 | 05/31/2013 10:39:36 | CIMC | Platform alert LED_BLADE_STATUS #0x99 | LED color is amber | Asserted 93 | 05/31/2013 10:39:37 | CIMC | Processor CATERR_N #0x74 | Predictive Failure deasserted | Asserted 94 | 05/31/2013 10:39:37 | CIMC | Platform alert LED_BLADE_STATUS #0x99 | LED color is green | Asserted
Instructions on how to retrieve SEL information can be found here:
The issue is resolved in these Cisco UCS B-Series software releases:
Note: A host power off and a Cisco Integrated Management Controller (CIMC) reboot is required for this fix to take effect. This is NOT a normal upgrade sequence. Please carefully read and follow the steps documented in the release note.
UCS software can be downloaded from Cisco.com from this location:
UCS software upgrade instructions can be found at this location:
UCS Install and Upgrade Guides
Some UCS B-Series M3 Blade Servers have shipped from Cisco with updated voltage regulator firmware and an older software version than those noted in the Workaround/Solution section. These Blade Servers can be identified by a deviation sticker affixed near the front of the unit. These Deviations apply for the issue described in this Field Notice:
Deviation Label examples:
A UCS B-Series M3 Blade Server with the versions noted in the Workaround/Solution section have the required fix for the issue described in this Field Notice.
In order to view the version installed on the UCS Blade Server in UCS Manager, navigate to this location for each blade:
UCSM > Chassis > Servers > Server > Installed Firmware
Example:
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:
Cisco Notification Service—Set up a profile to receive email updates about reliability, safety, network security, and end-of-sale issues for the Cisco products you specify.