Issue With SPARC M5/M6-32 PSUs Requires Firmware Upgrade

Asset ID:	1-77-1664921.1
Update Date:	2014-05-27
Keywords:

Solution Type Sun Alert Sure

Solution 1664921.1 : Issue With SPARC M5/M6-32 PSUs Requires Firmware Upgrade

Applies to:

Sun Hardware - Generic
SPARC M5-32
SPARC M6-32
SPARC
Information in this document applies to any platform.
_______________________________________________

Date of Resolved Release: 23-Apr-2014
_______________________________________________

Description

On SPARC M5-32/M6-32 servers, a Power Supply Unit (PSU) that experiences a voltage drop longer than 100ms and less than 400ms may fail/fault and not produce power, and PSUs may be damaged during these transient power fluctuations. The platform will become inoperable if more than six power supplies are damaged, and the system can only be restored to operation when six functioning PSUs are available.

Occurrence

This issue can occur on the following platforms:

SPARC M5-32 and M6-32 Servers

Note: No other systems are affected by this issue.

To determine if a platform PSU is at risk for this issue, check the part number and revision as follows:

      -> show -d properties /SYS/PSU0
      SYS/PSU0
      Properties:
      type = Power Supply
      ipmi_name = /PS0
      fru_description = A254_Power_Supply
      fru_manufacturer = _________ELECTRONICS (Country of MFG)
      fru_part_number = 7074835
      fru_rev_level = 00
      fru_serial_number = 465824T+1302C51611
      fault_state = OK
      clear_fault_action = (none)

A fru_part_number of 7070758 or 7074835 is at risk if the fru_rev_level is not 02. If the value is 02, then the PSU is not at risk. A part number of 7074836 or newer (numerically higher) are not at risk.

Symptoms

Affected PSUs will be faulted and not produce DC power. If the number of PSUs affected is larger than 6, the platform may remain inoperable until the issue is resolved. Below is an example consistent with a PSU affected by this issue:

      -> show /System/open_problems

      Open Problems (3)
      Date/Time Subsystems Component
      ------------------------ ------------------ ------------
      Sun Mar 09 13:21:58 2013 System /SYS (Host System)
      A power supply AC input voltage failure has occurred. (Probability:100,
      UUID:099692b0-c8f7-62ce-aedf-9431540ad918, Part Number:31733409+1+1, Serial
      Number:AK000xxxxx, Reference Document:http://support.oracle.com/msg/SPT-8000-5X)

Note: The above output example is not exclusive to this issue and does not necessarily indicate that this issue has occurred.

Workaround

A firmware upgrade for M5/M6 PSUs is required to remediate this issue. Contact your service provider and request service action to upgrade the firmware on the affected PSUs.

Note: To be able to successfully execute the PSU firmware update, ILOM must be at a minimum of 9.1.1.a .

History

23-Apr-2014: Date of release, status Resolved
27-May-2014: Added Note to Workaround/Resolution section

Support: See FAB <Document:1646206.1> - "FCO A0339-1: Proactive: SPARC M5/M6-32 PSU Firmware updates required to avoid PSU failures."
for support procedures on this issue.

Note: FAB/FCO documents are published for Internal/Field/Partner only and are not for distribution to customers.

Also see Reference <Document:1641174.1>: "SPARC M5-32 and M6-32 Servers: Decoding installed A254 firmware version"

Questions regarding this document should be addressed to
sunalertpublication_us_grp@oracle.com and copy the
responsible submitter/engineer listed below.

Internal Contributor/Submitter: roy.stiles@oracle.com
Internal Eng Responsible Engineer: steve.kurihara@oracle.com
Oracle Knowledge Analyst: david.mariotto@oracle.com
Internal Eng Business Unit Group: M-Series HW Engineering
Internal Associated SRs: 3-7912060121

References

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