Sun Storage[TM] 3510 FC Array Experiences Unexpected SES Events

Asset ID:	1-71-1012828.1
Update Date:	2018-03-04
Keywords:

Solution Type Technical Instruction Sure

Solution 1012828.1 : Sun Storage[TM] 3510 FC Array Experiences Unexpected SES Events

Applies to:

Sun Storage 3510 FC Array - Version Not Applicable to Not Applicable [Release N/A]
All Platforms

Goal

Description

Customers have reported that every 30 seconds as per polling interval, events were getting reported suggesting a bad power supply which can only be cleared by a power cycle of the Sun Storage[TM] 3510 FC Array.
Such events include: false power supply, not available messages, and amber LEDs on drives, controller, front panel and power supply.

Reported cases were with seen with DC power supplies.

Errors from persistent eventlog:

Thu Jun     8 14:33:28 2006
[Primary]    Notification
SES(C2 I12)Power Supply 1:Power Supply Back On-Line

Thu Jun     8 14:34:25 2006
[Primary]    Alert
SES(C2 I12)Power Supply 0:Device Not Availabled !

Thu Jun     8 14:34:25 2006
[Primary]    Alert
SES(C2 I12)Power Supply 1:Device Not Availabled !

Thu Jun     8 14:35:55 2006
[Primary]    Notification
SES(C2 I12)Power Supply 0:Power Supply Back On-Line

Thu Jun     8 14:35:55 2006
[Primary]    Notification
SES(C2 I12)Power Supply 1:Power Supply Back On-Line

Also seen:

Thu Jun  8 18:00:44 2006
[3F3f] #5542:  SES Device on StorEdge Array SN#8050259 CH2 ID12: ALERT: PS 0 power supply state changed to critical

Thu Jun  8 18:00:44 2006
[3F3f] #5543:  SES Device on StorEdge Array SN#8050259 CH2 ID12: ALERT: PS 1 power supply state changed to critical

Thu Jun  8 18:01:42 2006
[3Fdf] #5544:  SES Device on StorEdge Array SN#8050259 CH2 ID12: NOTICE: PS 0 power supply is no longer critical

Thu Jun  8 18:01:42 2006
[3Fdf] #5545:  SES Device on StorEdge Array SN#8050259 CH2 ID12: NOTICE: PS 1 power supply is no longer critical

In addition, the following amber LEDs were reported:

- Disks 0 and 1
- secondary controller (lower)
- all front panel LEDs except for fan
- either left or right power supply (varies across power cycles).

Name: FC_CHASSIS_BKPLN
Description: SE3510 FC Chassis/backplane
Part Number: 370-5535
Serial Number: 09862F
Revision: 02
Manufacturing Date: Wed Sep 14 09:13:59 2005
Manufacturing Location: Suzhou,China
Manufacturer JEDEC ID: 0x0301
FRU Location: FC MIDPLANE SLOT
Chassis Serial Number: 09862F
FRU Status: Fault

Fix

Steps to Follow

Version 1102 and later provided an SES firmware revision that does not monitor the LM75C temperature sensors on the Storage[TM] 3510 midplane.

Please validate that each troubleshooting step is applicable to your
storage array:

1. Verify the version of SES firmware is at 1102 or above via:

sccli> show ses

2. If below revision 1102, upgrade the SES firmware by installing the latest version in: <SunPatch:113723-21>

3. If SES firmware cannot be installed, alternative resolution is to power cycle the array.

Internal Comments See CR 6442784

The root cause of the problem is the result of a deficiency in the LM75 temperature sensor
located on the midplane of the SE3510 resulting in the I2C state machine lockup
and the LED freeze. Test @results indicate the noise level of the SCL signal on the
SE3510 midplane triggered the LM75C I2C @state machine lockup due to the inadequate noise
immunity of the National Semiconductor LM75C.

Since the I2C state machine lockup can ONLY occur when the device is @addressed, removing the @monitoring of the device will eliminate the @potential I2C hang condition of the LM75C. The output @values of the @temperature sensors will be derived from the IOM temperature sensor @thereby ensuring @backward compatibility with any script that may be @monitoring using sccli software.

Change History
Date: 2010-12-21
User Name: susan.copeland@oracle.com
Action: remove sunsolve link

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